Steam Vents
These steam vents occupy the high alpine zone at 12,526 feet on Mauna Loa, where volcanic heat creates dramatic fumarolic activity in terrain nearly bare of vegetation. The site receives 12.3 inches of annual snow.
The landscape surrounding the vents consists of barren lava flows, sparse grasses, and exposed rock. Temperatures average 41.6°F despite the equatorial latitude, and hikers experience genuine alpine conditions complete with intense solar radiation and thin air.
Reaching this site requires nearly 4.7 miles of hiking from North Pit Trail. Expect challenging terrain, rapid weather changes, and serious altitude exposure. Visit during stable summer months when snow doesn't block routes.
Kilauea's geothermal system extends into Mauna Loa's upper flanks, where circulating groundwater achieves temperatures high enough to produce steam despite the high elevation. This intersection of volcanic heat and extreme altitude creates a unique geothermal environment.
Some links are affiliate links. We may earn a commission at no extra cost to you.
Steam Vents sits at 12,526 feet — well above 10,000 ft where the air holds roughly 30% less oxygen than at sea level. Altitude sickness (headache, nausea, dizziness) is a real risk, especially when combined with the dehydrating effects of hot water. UV exposure is approximately 50% stronger than at sea level. Acclimate for at least 24 hours before soaking, drink extra water, and descend if symptoms worsen.
As an Amazon Associate, we earn from qualifying purchases.
Steam Vents is road-accessible, so you can bring more gear. Cold air temperatures make a changing robe or warm layers essential.
As an Amazon Associate, we earn from qualifying purchases.
Springs Near Steam Vents
Hike 6 waterfalls near Steam Vents
Looking for more outdoor adventures? Explore waterfall hikes near Steam Vents, Hawaii.