Austurengjahver geyser is located close to Grænavatn and Kleifarvatn in Reykjanes peninsula. The thermal area of Austurengjar extends from east of Lake Grænavatn to Lake Kleifarvatn in the north. Hot springs, mud pots, and fumaroles are scattered sparsely over the area.
The largest and most powerful hot spring, called Austurengjahver, Engjahver, or Stórihver, is located east of Lake Grænavatn in about 1,6 km walk from the parking lot where a sign leads you on to the right trail.
In the north Austurengjar overlaps with the south part of Lake Kleifarvatn. Hot springs are located on its bottom and every now and then one is erupting through the water surface. Hot springs can also be found along the south shore of the lake.
In recent years the chance to observe hot spring activity at Lake Kleifarvatn increased significantly because in 2000 two major earthquakes induced an ongoing sinking of the water level.
On this website you can find instructions on how to hike to Austurengjahver
You can learn more about this fascinating area at Visit Reykjanes website