Fortress of Solitude

USA
UKClimbing.com | 8a.nu

Quick Info

Country USA 🇺🇸
Rock type Limestone
Climbs
Sport routes 4 (9a to 9b)

Quick Info

Country USA 🇺🇸
Rock type Limestone
Climbs
Sport routes 4 (9a to 9b)
Contributors
141 contributions since 3rd July 2021.
2 contributions since 1st January 2025.
1 contribution since 10th May 2026.

Map

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Pics + Vids

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Climbs

4 recorded climbs.

Year Climb Grade Climber Style Date
1999 Kryptonite 9a Tommy Caldwell Lead | worked 1999
First ascent.
2000
2001
2002
First ascent.

The hardest route in the US before Chris Sharma established Jumbo Love to establish the first 9b in the US.
2004
2005–2021
2022
First ascent. Suggested grade breakdown: 7c G 7C N 8A+/8B M 7C+ M 7c+.

References

[1] https://www.8a.nu/news/jon-cardwell-does-the-fa-of-wind-up-bird-9a+-b

[2] https://www.climbing.com/news/jon-cardwell-makes-fa-of-5-15b-wind-up-bird/

[3] https://open.spotify.com/episode/6uUvO5bJK6TkV71I2qi9Tr?
2024
2025
First ascent.

References

[1] https://www.instagram.com/p/DY2NBfEjnv9/?img_index=1

[2] https://tensionclimbing.com/blogs/blog/the-evolution-of-kryptonite-the-process-behind-yellow-sun-colorado-s-newest-5-14d
Climb Grade # Recorded Ascents Ascents Recorded Between
Wind Up Bird 9b 1 11th November 2023
Flex Luthor 9a+ 6 1st January 2003 – 18th November 2023
Kryptonite 9a 13 1st January 1999 – 2nd May 2026
Yellow Sun 9a 1 27th May 2026