Jay Anderson's Posts and Comments on Mountain Project

Jay Anderson

Cupertino, CA

Contact Jay

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More About Jay Drop down

Member Since

May 10, 2018

Last Visit: 1 day ago

0 Points Details Drop down

0 Areas

0 pts - 15 each

0 Routes

0 pts - 10 each

0 Photos

0 pts - 5 each

0 Approach Trails

0 pts - 4 each

0 Page Improvements

0 pts - 1 each

Favorite Climbs

Home crag is Castle Rock State Park and Sandborn County Park - Santa Cruz Mountains Sandstone.

Favorite climbing is City of Rocks and Castle Rock, Idaho

Other Interests

Founder of Will Sew For Bolts

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Comments View All 23

Nov 24, 2025 Joshua Tree NP > Quail Springs Area > Vagmarken Hill > Vagmarken Hill… > (g) The Ranch The Llama 5.9- ● Broke a hold at the roof and fell on TR. That was after avoiding two other sections off moving rock a litt… View Comment
Oct 11, 2023 San Francisco B… > S Bay Area > Castle Rock & S… > Castle Rock Proper Chimney 5.7 ● This route has a new two-bolt anchor. To set a top rope anchor, build a tether from the belay pole and rap… View Comment
Oct 10, 2023 San Francisco B… > S Bay Area > Castle Rock & S… > Castle Rock Proper Chock Stone 5.8+ ● There is a new two-bolt anchor for the Access Route. One or both of those bolts can be incorporated into a… View Comment
Oct 10, 2023 San Francisco B… > S Bay Area > Castle Rock & S… > Castle Rock Proper Access Route 5.5 ● There is a new, two-bolt anchor for this route. The old, spinning bolt has been removed. The new anchor i… View Comment
Jul 23, 2023 San Francisco B… > S Bay Area > Castle Rock & S… > Indian Rock Area > Indian Rock Cave Route 5.7 ● There are two routes here, two sets of anchors, and two bolts for use when leading. Those anchors and bolt… View Comment
Jul 23, 2023 San Francisco B… > S Bay Area > Castle Rock & S… > Indian Rock Area > Indian Rock Cave Route 5.7 ● I extricated a very stuck rope from the Cave yesterday. This is a common occurrence. Be very careful if/w… View Comment

Forum Messages View All 597

General > General Climbing Reply: How long until you're forced to downgrade yourself? Feb 18, 2026 If you never upgrade, then downgrading is not an issue. 5.7 for life! View Message
Gear > FOR SALE / FOR FREE / WANT TO BUY Reply: WTB: Men’s Down Pants, 32-33 US sizing Dec 20, 2025 I have new (worn once) Western Mountaineering down pants. Probably size L. HMU for photos. View Message
General > General Climbing Reply: What does "on me" mean? Dec 16, 2025 It means you need a new partner. View Message
General > General Climbing Reply: ASCA Update: Funding 2026 Bolt & Anchor Replacement Dec 15, 2025 Thanks Ira. Send me your receipt and I'll hook you up with sewn goodies from Will Sew For Bolts. View Message
General > General Climbing Reply: ASCA Update: Funding 2026 Bolt & Anchor Replacement Dec 15, 2025 Let's go climbers! There are crag stewards around the country giving up their climbing time to hang in their harness and do hard work. All we have to do to he… View Message
Gear > FOR SALE / FOR FREE / WANT TO BUY Reply: WTB: HMG Ultamid 4--purchased Dec 13, 2025 Definitely go for the carbon pole. Trekking poles break and my Mid 4 has a patched hole because of it. There were two MSR's going full blast when it cam down. … View Message

Route Scores View All 2

5.8 5b 16 VI- 15 HVS 4c 981 ● Skyline Trad S Idaho > City of Rocks > Morning Glory Spire
5.9 5c 17 VI 17 HVS 5a 7 ● Mahogany Corner Trad S Idaho > … > Castle Rocks > Egg Wall