To the left of "Thunder Mammal" on the left side of the boulder's steep face there is an obvious crack that ends halfway down the face. Stand start matched in fairly good holds at the base of the main crack line. Work up the crack to the enormous jug at the lip to top out.

Thunder Crack -Stand-

Thunder Cat

Thunder Crack -Sit-

Thunder Mammal

Thunder Dihedral

Thunder Arete

Space Jam

Thunder Dyno

This is a burly addition to the Thunder Crack... 

  Sit start matched in the horribly thin diagonal crack/seam below the main crack. Use a distant foot at the base of the face, and whatever else you can manage to propel yourself upward to latch the first hold in the main crack. 

  Use the nonexistent to less than marginal feet after that to climb into and through the upper Thunder Crack to get to the top out.

This is a good, short, fun little crack. To the left of the main Thunder Boulders, find the short little block against the steep bigger ones with the diagonal crack. Sit start and follow the crack left to top out.

On the shorter, steep, front-left face, find the close block at the base of the boulder. In front of this is a low, in-cut slot crimp rail. Match start in this. Work right to the good, large flake and fall into another thin crimp. Toss high to quality holds, and pounce to the nice, flat lip at the top of the boulder. Press out a fun mantle!

Sit start at the base of the dihedral on nice diagonal rails. Work right along the obvious line of nice rails and the juggy crack to the end of the line at the top of the left side of the boulder for the top out.

At the arête to the right of "Thunder Mammal" find the very low diagonal sidepull rail. At the bottom of this rail is a small pebble. Sit start matched on the rail above this small pebble. Climb the arête using any holds on either side of the arête to mantle over the top.

Better than it looks. Has nothing to do with Space, Jams, or Thunder... But then again, anytime Jay-John climbs a new boulder problem (as the legend goes) it thunders somewhere in the world. 

  Find the steep little cramped up overhung blade to the furthest left of everything known as the Thunder Boulders. Locate the long, deep jugs mid-face and start with feet posted on the thin blade at the distant base. Blast up to the lip and commence the tough top out (locate the hidden upper side-pull and you're good to go).

At Thunder Arête, look left of arête for the good juggy rails. Stand start matched in the rail/jugs and blast a huge dyno to the jug at the top lip, left of top arête corner. Top out. This goes from the sit as well. 

  Also for an eliminate, fun, crimpy test piece, sit start on the two lowest small crimps at the bottom of the boulder. Do not use any arête holds, or jug holds out left of this direct line. Climb direct into the standard jug start, and then do not dyno and pull several tough crimps direct to the finish. Adds a grade!

Super steep, proud, and awesome. This has a long, slightly shorter left face, and a tall, skinny right face that is back set a bit. There are two aesthetic arête climbs here, and lots of steep crimps. 

  If you look in the lowest right corner of the photo the unassuming, tiny slab ramp actually leads to the small, hidden, and awesome Thunder Roof.

Description

Location

Protection

Routes in Thunder Boulders