Walk to the rim of Mount Mihara on Izu Oshima and experience exposed lava flows, crater views, and the island’s recovering vegetation. This 3–4 hour trek combines paved approach trails with an unpaved crater loop—perfect for hikers wanting a compact volcanic experience.
More ways to explore the area's outdoor wonders
You arrive at the parking lot at Mt. Mihara as the island wind trims the horizon and the volcanic cone looms above—black lava ribs cut into green slopes, and the trail climbs toward a rim that smells faintly of mineral heat.
Difficulty
moderate
Duration
3–4 hours
Fitness Level
Moderate fitness: able to walk uphill on paved paths and navigate uneven, unpaved crater rim for a few hours.
Wildlife
History
Mount Mihara is an active volcanic cone whose eruptions over the past century have reshaped Izu Oshima’s landscape and settlement patterns.
Conservation
Stay on trails to protect fragile volcanic soils and recovering vegetation; follow leave-no-trace principles and avoid disturbing regrowth or rock exposures.
Reserve your spot on the Trekking Volcanic Island in Izu Oshima today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear grippy footwear
Choose trail shoes with good tread for paved sections and loose volcanic scree on the crater loop.
Bring 1–2 liters of water
There’s little shade on the rim; hydrate before and during the hike to avoid fatigue.
Check weather and wind
Conditions change fast at the summit—strong winds can make the crater loop exposed and chilly.
Stay on signed trails
Trust closures and guide directions—crater edges can be unstable and dangerous.
Hiking shoes
Support and traction for paved slopes and loose volcanic scree.
Water bottle or hydration bladder (1–2 L)
Adequate hydration for exposed sections with limited shade.
Windproof shell
Protects against sudden high winds and light rain common at the summit.
spring
Sun protection (hat, sunglasses, sunscreen)
Crater rim offers little shade; UV exposure can be high.
summer