Arco

A surreal landscape of volcanic formations.

💡 Bring plenty of water, and wear sun protection as there’s little shade. Visit early in the morning or late in the afternoon for cooler temperatures and stunning lighting.

A vast volcanic landscape with unique geological features.

💡 Explore the park on foot to truly appreciate its unique features. Visit in spring or fall to avoid the summer heat. Don't forget sunscreen and plenty of water!

Secluded spot by a gentle river with smooth pebbles

Natural lava tubes with unique geological formations

Remote hot springs with ideal soaking temperatures by a creek.

Volcanic caves with rare bacteria and serene echoes

Unique hoodoo formations, colorful and less crowded

Otherworldly petroglyphs among lava formations.

💡 Don’t forget to explore beyond the main trails for hidden carvings.

Fascinating year-round ice caves in volcanic landscape

💡 Wear sturdy shoes; some areas can be slippery.

A sacred geological wonder rising from the plains.

💡 Bring water for the hike and explore the base for fossil hunting.

Lava formations that resemble another planet!

💡 Don’t miss the Inferno Cone — it's a short hike with fantastic views.

A massive rift showcasing Earth's power!

💡 Bring a good pair of hiking shoes — the trails can be rugged!

Walk on Mars — in Idaho!

💡 Bring plenty of water; the terrain is arid and hot.