Gunung Seminung with a 500-m-wide summit crater forms the SE shoreline of Lake Ranau within the Ranau caldera, seen here in this September 2019 Planet Labs satellite image mosaic (N is at the top). An explosive eruption produced the Ranau Tuff out to 70 km from the vent. The N-S length of the lake is approximately 16.5 km.

Satellite image courtesy of Planet Labs Inc., 2019 (https://www.planet.com/).

Copyrighted image used with permission. All Rights Reserved. Contact photographer for any usage requests.

Keywords: caldera

Ranau