Davidof Volcano is a potentially active stratovolcano and caldera remnant in the Aleutian Islands of Alaska, USA, 1,237 miles (1,991 km) from Anchorage.

[7] Because of the inclusion of Alaska, the United States has the largest number of active volcanoes in the world, many of them geologically young.

[9] The Aleutian Arc forms the northern boundary of the Pacific Ring of Fire,[9] where tectonic activity generates earthquakes and volcanic eruptions regularly.

Nelson of the United States Geological Survey (USGS) determined that the lava, at least, was layered over a base of red breccia.

[13] Fungi, liverworts, horsetails, and ferns, can be found on the island, along with flowering plants, such as the narcissus anemone, lupines, and orchids.