Wolf, the highest volcano of the Galapagos Islands, straddles the equator at the north end of the archipelago's largest island, Isabela. Volcan Wolf shield volcano has steeper slopes than most other Isabela volcanoes. A 5.5 x 7 km caldera, 600 m deep, is located at the volcano's summit. The broad caldera floor is largely covered by fresh, unvegetated lava flows. Prominent unvegetated lava flows drape forested eastern flanks of the volcano to the sea. Wolf's 1797 eruption was the first documented in the Galapagos Islands.