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Cat Mountain: 3,852' - Tucson Mountain Park

3/19/2020

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Summit an ancient caldera remnant in the "Tucson Mountain Chaos" just south of Saguaro National Park - just be careful of the "jumping cholla".
Related:   
Tucson Mountains Tour:  Golden Gate Mountain, Bobcat Ridge, and Little Cat Mountain
​
Elephant Head Peak - Santa Rita Mountains, Southern Arizona

Desert Plants

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Cat Mountain from summit of Little Cat Mountain
From its southwest side, the steep cliff face of Cat Mountain looks formidable, if not impossible to climb.  We took the "standard" route, striking cross-country from Explorer Trail on the other side of the mountain to follow the east ridge of this dark hulk of consolidated volcanic ash.  On the off-trail portion, a "jumping" cholla became embedded in my calf, we took a different route on the approach than on the return, and we saw Coues Whitetail deer.  It was a treat to see these elusive grey deer against dark brown cliffs.  I was able to ease the hooked-spine teddy bear cactus off using a combination of pulling on my pant leg to lift it out and the efforts of my fellow hikers.  All the more reason to wear long pants when hiking cross-country.  

Fred and I hiked with our long-time friend Scott, an avid Sierra Club Desert Peaks Section hiker.  Each year we hike a desert peak or two together, signing the summit register, "Three friends who like to hike." We recently hiked Pinto Mountain in Joshua Tree National Park and Thimble Peak ​in Tucson.  On this cold and windy day,  we were the only ones on the peak.  Not sure how many summits and hikes we three have celebrated over 25 years.  It's a lot!
Trip Stats
Overview: 
Climb the seemingly unclimbable ash tuff rocks of Cat Mountain for a dual view of the sprawling city of Tucson and the rugged peaks of Saguaro National Park and other high points in this ancient caldera.  Become immersed in the beautiful Lower Sonoran ecosystem of robust saguaros,  various types of cholla cacti and mesquite.
Location: Tucson Mountain Park administered by Pima County Parks and Recreation, just south of Saguaro National Park near Tucson, Arizona.
Date hiked:  December 28, 2019.
Distance:  11.5 miles round-trip.
Elevation gain:  1,160' net gain to summit.  Trailhead = 2,980';  summit = 3,852'.
Trails:  Yetman -> Sarasota ->Explorer (frequently traveled single-track).
Difficulty:  Easy to moderate on park trails;  moderate to strenuous Class 2 off trail to summit, one Class 3 maneuver near summit, mostly no-mild exposure.
Maps:  National Geographic Trails Illustrated #237:  Saguaro National Park, Tucson Mountain Park trail map.
Driving directions:  From I-10 in Tucson, take Speedway Blvd West which turns into Gates Pass Rd. at intersection with Camino de Oeste.  From this intersection, drive ~ 4.5 miles to Gates Pass Overlook, descend down ~0.4 miles past the pass: Yetman Trailhead is on the left in a large parking lot at a sharp right turn in the road.
Considerations:   Trail head kiosk, no permit needed.  No dogs allowed.  Multi-use:  mountain biking, hiking and equestrian use.
Coordinates:  Yetman Trailhead:  32.2173 N  -111.1029 W.   Cat Mountain summit:  32.1841 N  -111.0607 W.
Geology:  Tucson Mountains Caldera.  Summit is Cat Mountain Tuff (consolidated volcanic ash), valleys are landslide breccia (rock made of angular minerals or rock cemented together in a fine-grained matrix) deposits (referred to as Tucson Mountain Chaos).
Hike Summary
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Yetman Trail --> Sarasota Trail --> Explorer Trail
  • From Yetman Trailhead, hike southeast for 1.6 miles to intersection with Sarasota Trail.
  • Saddle between Golden Gate Mountain and Bren Peak is reached shortly after trailhead:  Cat Mountain in the distance as trail descends from saddle.
  • At intersection, take a sharp right (south) onto Sarasota, hike 1.4 miles to intersection with Explorer Trail.
  • Hike 0.8 miles to 3-way intersection with Starr Pass Trail and end of Sarasota Trail.  Stay on Explorer. 

​Explorer Trail to Cat Mountain summit (cairned route from trail to summit)
  • ​Hike Explorer Trail along the north flank of Cat Mountain for 1.0 mile, walking around Point 3,059'.  At sharp turn in trail, cairns mark the route cross-country up gulch on 3,059's southeastern flank.
  • Gain 520' to Cat's ridge in 0.3 miles.  Follow cairns to summit.
  • Our ascent exited Explorer Trail earlier on the west base of Point 3,059', crossed the standard cairned trail (we didn't see it!) and gained the ridge at a lower elevation.   See our tracks below.  We descended via the cairned route.
We started on the Yetman Trailhead, not far from Golden Gate Mountain, instead of the Sarasota Trailhead which is closer to Cat Mountain so we could spend as much time as possible walking through this beautiful Tucson Mountain Park encompassing much of an ancient caldera, and weave around thorny saguaros and jumping chollas.  We had also started at the Yetman trail a few days before, when we hiked three high points in this park:  Golden Gate Mountain, Little Cat Mountain and Bobcat Ridge.  All four peaks could be summited in one long day.
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Golden Gate Mountain's southeast slopes and cholla.
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Fred and Scott near Yetman trailhead under the north cliffs of Golden Gate Mountain
Reach the saddle between Golden Gate Mountain and Bren Peak at 0.4  miles from Yetman trailhead, an excellent place to get a perspective on three high points:  Bobcat Ridge, Little Cat Mountain and Cat Mountain.  A textured green carpet sweeps down valley and up the slopes of these brooding, rugged mountains.  The only thing that distracts from this scene is the housing development in the valley to the west.  

​This pleasant view makes it difficult to imagine the sudden event of a magma chamber spewing the searing ash that formed this ancient caldera landscape.  Tucson Mountain Chaos is the term given by geologists to the valley rocks that underlie the Cat Mountain Tuff, the compacted ash that forms these peaks.  There is no definite answer to the thousands-feet thickness of this Cretaceous-age tuff.  Were these rocks below the Cat Mountain Tuff rafted from deeper levels by the rising magma?  Or, was this rock caused by a landslide in a caldera that had accumulated the tuff?  To make the geologic puzzle even more complicated, spreading of the Earth during Basin and Range faulting makes the geologist's task of identifying the age relationship of the rocks more difficult.
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Yetman Trail heads to three summits from left to right:  Bobcat Ridge,  Cat Mountain in middle horizon with Little Cat in front of it.
At 1.6  miles, Yetman intersects with Sarasota Trail.  Bobcat Ridge is gained by going left and staying on Yetman Trail.  For Cat Mountain, turn sharp right (south) onto Sarasota.  In 1.4 miles, Explorer Trail intersects with Sarasota.  You can hike on either trail to get to Cat Mountain.  On our approach, we took Explorer Trail which wraps around the base of Little Cat Mountain for 0.8 miles to meet up again with Sarasota and also Starr Pass Trail.
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The worn-out "You are Here" red dot marks the intersection of Sarasota and Explorer Trails.   Our route:  Explorer (pink) trail to pass under the north flank of Cat Mountain.
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Arizona Barrel Cactus
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Cat Mountain from Explorer Trail on its north side.  We went up low saddle to the left of the summit block to gain lower ridge.
From our vantage point on the Explorer trail, we could see the gentler rise of Cat Mountain's east ridge. The three-trail intersection (Starr Pass, Explorer and Sarasota) is well-marked as are other intersections in this well-cared-for park.  We continued on the Explorer trail for 0.6 miles until we saw a manageable route to the ridge, leaving it earlier than the standard cairned route (1.0 miles past 3-way junction), making our own path.  A sea of detached teddy bear cholla branches, those little mobile yellow ovals armored with extremely sharp spines made us pick our footsteps carefully.  However, I wasn't careful enough; one jumped up and stuck my pant leg to my calf.  I remembered a hike many years ago when we used a metal comb to remove a cholla piece from a dog's leg.  Scott and Fred somehow got the prickly thing off me and we resumed our cross-country hike with no serious injury except for a few red spots on my skin.

​The day grew colder and cloudier.  The broken dark red and tan rocks deposited on the slopes from the tuff cliffs above crunched under our boots.  The occasional cactus spine scraped against our packs and in some cases grabbed on.  
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Three-way intersection.  From here, exit Explorer Trail for more difficult ascent up Cat Mountain's northwest ridge.  "Standard" and less difficult route leaves Explorer 1.0 mile after this intersection.
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"Teddy Bear Cholla"
Cylindropuntia bigelovii
After getting off Explorer, we looked for the best way up.  Rocks formed a natural staircase.  Four or five Coues Whitetail deer perched far above on steep cliffs stopped to watch us, curious at three humans stumbling through the cacti.   The ridge walk was straightforward and it felt good to follow its natural route and rhythm, using hands when needed.  We came upon cairns marking the final ascent to the summit and a complete change of view of the open sky and the sprawl of Tucson far below us.  There's just one Class 3 crack with mild exposure to navigate, with just enough ledges to place feet and hands.  Frequent rock cairns mark an obvious path.
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Picking our way to Cat Mountain's east ridge.
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 Christmas Cactus 
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Only Class 3 climb on route:  crack on left side of rock
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Easy to find the way up on wide ridge
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Saguaro and cholla garden below last summit approach
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Scott ascending the last part of ridge climb
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Sweet cactus garden before final ascent.
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Fred on the summit of Cat Mountain 
Golden Gate Mountain on the right;  Yetman Trail goes through the saddle to its right.
Every ridge scramble, every summit has its own unique personality.  The scramble up Cat Mountain's east ridge is challenging yet not scary, exposed but safe, with the right amount of rocks and cactus gardens making it aesthetically friendly.  You're never bored with looking at saguaros and chollas because with each one, there is a different size or form.  This summit has one very unusual feature - a plastic white boulder that houses a radio repeater.  Looking at Cat Mountain from Tucson area, you would not suspect the spacious flat areas on its summit.  A steady cold  wind cut short our time lounging on the top, but we got a good look at Golden Gate Mountain to the northwest and the steep drop-off to the south.

As we walked down, the clouds closed again, the temperature dropped, and the wind chilled.  We hiked back via Sarasota Trail at the three-way intersection.  We added another summit to our "three friends who like to hike" resume', and more stories for reminiscing.  This will go down in the books as one of our more mellow hikes together.  Never stop climbing mountains!
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Scott and Fred
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Looking at Santa Catalina Mountains north of Tucson and Rincon Mountains on right horizon.
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Fred and Sue on Cat!
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Parting shot of Cat Mountain from Sarasota Trail.
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Our GPS tracks to Cat Mountain from Yetman Trailhead
Red line is our Class 2 ascent route; blue line is cairned trail and our descent.
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Elevation profile over entire 11.5-mile hike.
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    Exploration documentaries          –  "explorumentaries"  list trip stats and highlights of each hike or bike ride, often with some interesting history or geology.  Years ago, I wrote these for friends and family to let them know what my husband, Fred and I were up to on weekends, and also to showcase the incredible land of the west.  

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    Sue Birnbaum

    A  trip to Jumbo Rocks Campground in Joshua Tree National Monument 38 years ago sparked my passion for hiking, exploring, and learning about desert ecosystems.  For the past 25 years, my husband Fred and I have explored the American West together; we love this land and I hope to inspire you to get out and explore through my photographs and trip descriptions.
    In 1992, Ray Wilson and I conceived the first Cactus to Clouds hike which climbs over 10,000 feet in one day to the summit of Mt. San Jacinto near Palm Springs, California.
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