Mount Martin

At the summit sits a small crater (roughly 300 meters across) that’s breached on the southeast side. The crater hosts vigorous fumarolic activity and, at times, a short‑lived crater lake. A voluminous Holocene lava‑flow field spilled from a vent on the north flank, filling the upper Angle Creek valley—big flows, big volume, classic Katmai. Expect sulfur-stained rock and steaming vents when visibility cooperates.

There’s no established trail to Mount Martin. Most visitors experience it by flightseeing—air taxis and operators based in King Salmon, Homer, Kodiak, or even Brooks Camp can overfly the Aleutian Range volcanoes when weather allows. If you’re an experienced backcountry traveler, reaching the area is a serious off‑trail expedition across glaciated/volcanic terrain and swift rivers. Plan full self‑sufficiency.

Volcanic gases can be hazardous, crater rims are unstable, and snow or ash can hide voids—admire from a safe distance and don’t descend into the crater. This is deep bear country: manage food and odors, maintain space, and follow park guidance. Check current volcano status and any alerts before committing to a trip.