"A popular slot canyon just outside the state park and part of the larger San Rafael Swell area, this scenic, world‑famous cut offers excellent hiking and canyoneering opportunities; it’s a must-add for people exploring the region but requires careful weather monitoring during monsoon season because of flash‑flood risk." - Carrie Dennis Carrie Dennis Carrie Dennis is a New York City-based writer and editor with more than a decade of content strategy experience. Her work has appeared in Travel + Leisure, Gothamist, Time magazine, Men’s Journal, Redbook, and Thrillist. Travel + Leisure Editorial Guidelines