A rugged 11 km hike 30 minutes from Reykjavík that climbs to Stórhóll, drops to the secluded Helgufoss waterfall, and finishes with a visit to Halldór Laxness’s museum. Expect boggy ground, volcanic panoramas, and a private guided experience.
More ways to explore the area's outdoor wonders
A cold wind pushes across the open fields as the van drops you at a narrow sign for Vindhöll. The path at first disappears into boggy grass and hummocks; underfoot the ground gives and pulls, then firms as the trail climbs. As you gain Stórhóll the low scrub opens and the horizon stretches—black lava ridges, volcanic plateaus, and distant peaks that seem to lean into the sky.
Difficulty
moderate
Duration
5–6 hours
Fitness Level
Participants should have regular aerobic fitness and strong balance for off-trail footing
Wildlife
History
The Mosfellsdalur valley has turf-farm roots and features in Icelandic rural life; Halldór Laxness lived and wrote in the area, drawing on these landscapes.
Conservation
The peat and moss recover slowly from trampling—stick to durable surfaces where possible and pack out all waste to minimize impact.
Reserve your spot on the Private Grimannsfell Day Hike to Waterfall and Legacy today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Boots with grip
Wear waterproof, stiff-soled hiking boots—terrain includes soft peat and slick stone that demand traction.
Layer for wind and rain
Bring a breathable waterproof shell and an insulating mid-layer; conditions can change within an hour.
Poles help on bogs and ditches
Trekking poles improve stability across soft ground and steep sections—use them for both ascent and descent.
Bring a compact first-aid kit
Minor ankle twists and blisters are common on unmarked, uneven ground—pack basics and blister care.
Waterproof hardshell jacket
Protects from frequent rain and strong winds common on Icelandic high ground.
spring|summer|fall|winter
Sturdy waterproof hiking boots
Needed for peat, bogs, and rocky ascent—ankle support reduces sprain risk.
spring|summer|fall|winter
Trekking poles
Helpful for balance through soft ground and steep sections.
spring|summer|fall|winter
Warm insulated mid-layer
Keeps you warm during summit stops and changing weather between strata.
spring|fall|winter