Best time to go
In summer, most people reach the valley via Brooks Camp to the Three Forks area and then hike in. Conditions run the gamut—loose pumice and ash, cold wind even in July, and rivers that can become difficult or impossible to ford after rain or melt pulses. In winter and spring, only experienced parties should consider traverses; expect sastrugi, windboard, ash‑over‑snow that can stop skis, and fast‑moving storms.















