Volcanodle
Puzzle #51 was Myojinsho.
Beyonesu Rocks are part of the barely exposed rim of the largely submarine Myojinsho caldera. Formation of the 8-9 km wide caldera was followed by construction of a large (2.6 km3) lava dome and/or lava flow complex on the caldera floor, originally located at a depth of 1,000-1,100 m. Most eruptions recorded since the late-19th century have occurred from the dacitic post-caldera Myojinsho lava dome on the NE caldera rim.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 51 ran on 29 Aug 2026 and the answer was Myojinsho, played with 6 guesses against 8 columns. On the record: Country - Japan; Region - Northwestern Pacific Volcanic Regions; Type - caldera; Tectonic setting - subduction; Elevation - <500; Last eruption - 20th-century; Rock type - dacite; Historically observed - observed.
Beyond the grid the record adds Largest recorded eruption - VEI 2; Holocene eruptions recorded - 25 eruptions.
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
- <500
- Last eruption
- 20th-century
- Rock type
- dacite
- Historically observed
- observed
Also on the record
- Largest recorded eruption
- VEI 2
- Holocene eruptions recorded
- 25 eruptions