Volcanodle
Puzzle #15 was Hakoneyama.
Hakoneyama volcano is truncated by two overlapping calderas, the largest of which is 10 x 11 km wide. The calderas were formed as a result of two major explosive eruptions about 180,000 and 49,000-60,000 years ago. Scenic Lake Ashi lies between the SW caldera wall and a half dozen post-caldera lava domes that were constructed along a NW-SE trend cutting through the center of the calderas.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 15 ran on 24 Jul 2026 and the answer was Hakoneyama, played with 6 guesses against 8 columns. On the record: Country - Japan; Region - Northwestern Pacific Volcanic Regions; Type - complex; Tectonic setting - subduction; Elevation - 500-1500; Last eruption - 21st-century; Rock type - andesite; Historically observed - observed.
Beyond the grid the record adds Largest recorded eruption - VEI 3; Holocene eruptions recorded - 8 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
- complex
- Tectonic setting
- subduction
- Elevation
- 500-1500
- Last eruption
- 21st-century
- Rock type
- andesite
- Historically observed
- observed
Also on the record
- Largest recorded eruption
- VEI 3
- Holocene eruptions recorded
- 8 eruptions