Volcanodle
Puzzle #63 was Kurose Hole.
Kurose Hole, between Mikura and Hachijo-jima islands, is a nearly circular submarine caldera 5-7 km in diameter with a 600-760 m deep floor. The high point of the caldera rim rises to about 100 m of the ocean surface. Large amounts of dacitic pumice have been recovered from dredges along the inner caldera wall.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 63 ran on 10 Sep 2026 and the answer was Kurose Hole, played with 6 guesses against 8 columns. On the record: Country - Japan; Region - Northwestern Pacific Volcanic Regions; Type - caldera; Tectonic setting - subduction; Elevation - submarine; Rock type - dacite; Historically observed - not-observed. 1 of the 8 columns is blank in the source (Last eruption), so nobody could score it either way.
Volcanodle builds its record from Global Volcanism Program, Smithsonian Institution (Venzke, E. (ed.), Volcanoes of the World, volcano.si.edu). The description above comes from the same place the game credits on every reveal: A verbatim excerpt of the volcano's GVP Geological Summary. The puzzle itself is still playable in the archive, and every answer that has been and gone is listed on the past-answers page.
How it scored
- Country
- Japan
- Region
- Northwestern Pacific Volcanic Regions
- Type
- caldera
- Tectonic setting
- subduction
- Elevation
- submarine
- Last eruption
- Not recorded
- Rock type
- dacite
- Historically observed
- not-observed