clean my rocks, ranger!

from an article in the seattle times on the increasing environmental impact of climbing in yosemite valley:

Rookie Ha Pham, 23, hopes to venture up it eventually, but said she was concerned the conditions she'd find wouldn't meet her standards.

"They should have signs and stuff and trash cans outside," said Pham, who climbs regularly in the safety of a San Francisco gym. "I don't think they even clean your rocks off for you out there."