Steaming vents at Pu'u O'o crater Young fern Rainforest hike Coast Hike through an ancient lava cave Inside the Keck telescope The Keck telescope from outside Aerial view onto the active lava delta View of the ocean entry Close-up of streams of lava running into the sea Beach of Waipio Valley Mauna Loa's caldera Lava cliff Pahoehoe lava Active lava Close up of active lava Group photo in front of the crater of Kilauea Iki Aerial shot onto the active crater Pu'u O'o Stream near Hilo Mauna Loa's caldera Ropy pahoehoe lava structures Milky way seen from Mauna Loa