| From: | USA 🇺🇸 |
| Gender: | Male |
| Hardest Boulder (Worked): | 7A+ |
| Hardest Trad (Worked): | E6 |
Inventor of the hueco V grading scale. The V comes from his nickname "Verm". He was prolific in the early development of bouldering in the US, taking over the mantle from John Gill and extensively developing Hueco Tanks during the 1980s and 1990s, with over 400 problems to his name. [1]