Volcanodle
Puzzle #27 was Kita-Bayonnaise.
The large submarine Kita-Bayonnaise (North Bayonnaise) submarine caldera, also known as Myojin Knoll, lies between the Aogashima and Myojinsho (also called Beyonesu Rocks) calderas abotu 300 km SSE of the Izu Peninsula. The 6-7 km wide caldera has walls 500-900 m high that reveal rhyolitic lava flows, shallow intrusions, and volcaniclastic deposits.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 27 ran on 5 Aug 2026 and the answer was Kita-Bayonnaise, 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 - rhyolite; 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
- rhyolite
- Historically observed
- not-observed