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Mushroom Massif

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Mushroom Massif Rock Climbing 

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Administrators: Leo Paik, John McNamee, Frances Fierst, Monomaniac, Monty, Kristine Hoffman (sitewide)
Submitted By: George Bell on Jul 29, 2002
This Afternoon

70° | 42°

74° | 45°

68° | 43°

68° | 46°

66° | 42°

67° | 42°
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BETA PHOTO: The left side of the Massif.


This is a large, wide crag on the south side of the river at mile 3.8. You probably won't see it driving up the canyon, but it is quite striking when coming down canyon. The rock seems to be grainy and rounded. Most climbs face north and are quite shady, even in mid-summer. The base of the crag is several hundred feet above the river.

Getting There 

Park at a large pullout on the south side of the road at about mile 3.8. This pullout is a hundred yards or so upstream of the crag, which is visible from here. Cross the river (wading is probably required Spring into Summer), and head SE to the crag. There is quite a bit of poison ivy in this area, so be careful. A sandy, barren shoulder seems to be the easiest way to access the crag, and there is a faint trail up it.

Climbing Season

For the South Fork of St. Vrain Canyon area.

Weather station 8.9 miles from here

11 Total Climbing Routes

['4 Stars',0],['3 Stars',2],['2 Stars',6],['1 Star',3],['Bomb',0]

Featured Route For Mushroom Massif
Rock Climbing Photo: Mike Endicott making the crux reach, May 3, 2015.

Quartz Dancer 5.11b/c 6c+ 23 VIII- 24 E4 6a  CO : Lyons : ... : Mushroom Massif
Climb a steep, narrow slab past two bolts, and make a long reach to a shallow pocket (crux). After clipping the third bolt, climb up into a shallow, crumbling, right-facing dihedral. Place gear ASAP. The rock and the gear improve as one climbs higher. There are some moderate runouts on moderate rock.A variation moves left from the crux, then climbs moderate rock, rejoining the main line at the base of the headwall. A connection can be made from the first part of Easy Street, diagona...[more]   Browse More Classics in CO

Photos of Mushroom Massif Slideshow Add Photo
Rock Climbing Photo: 06-25-2002
BETA PHOTO: 06-25-2002
Rock Climbing Photo: This 6 footer may greet you along the trail. He do...
This 6 footer may greet you along the trail. He do...

Comments on Mushroom Massif Add Comment
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By half-pad-mini-jug
From: crauschville
May 29, 2009
Definitely watch for poison ivy on the approach, it's very sneaky.... Not bad if you're paying attention though and be careful crossing the river, it can be strong.

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