# Ukinrek maars

- **Country:** United States
- **Coordinates:** 57.831667, -156.509722
- **Type:** Maars
- **Range:** Aleutian Range
- **Location:** Becharof National Wildlife Refuge, Alaska, on Alaska Peninsula
- **Elevation Ft:** 299
- **Last Eruption:** March–April 1977

The Ukinrek maars are two volcanic craters on the north side of the Aleutian Range in Alaska that were formed by a phreatomagmatic eruption in 1977. The maars are 1.5 km south of Becharof Lake and 12 km northwest of Peulik Volcano, on a low area of the range, bordering the Bering Sea. The western of the two is elliptical in shape and up to 170 m in diameter and 35 m deep. The other lies 600 m to the east and is circular and up to 300 m in diameter and 70 m deep. The east maar has a 49 m-high lava dome within its crater lake.

![Photo of Ukinrek maars](https://upload.wikimedia.org/wikipedia/commons/1/10/Ukinrek_Maar_in_Alaska_2011-08-16.jpg)

**Source:** https://en.wikipedia.org/wiki/Ukinrek_maars (Wikipedia, CC BY-SA)