Volcanodle
Puzzle #115 was Rishirizan.
Rishirizan is a highly dissected andesitic stratovolcano that forms a 20-km-wide island west of the northern tip of Hokkaido. Extensive erosion has produced an extremely rugged topography, with a dramatic sharp-topped, summit flanked by steep-sided radial ridges. A stratovolcano and flank lava domes were constructed beginning less than 200,000 years ago.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 115 ran on 1 Nov 2026 and the answer was Rishirizan, played with 6 guesses against 8 columns. On the record: Country - Japan; Region - Northwestern Pacific Volcanic Regions; Type - stratovolcano; Tectonic setting - subduction; Elevation - 1500-3000; Last eruption - older-Holocene; Rock type - andesite; Historically observed - observed.
Beyond the grid the record adds Holocene eruptions recorded - 1 eruption.
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
- stratovolcano
- Tectonic setting
- subduction
- Elevation
- 1500-3000
- Last eruption
- older-Holocene
- Rock type
- andesite
- Historically observed
- observed
Also on the record
- Holocene eruptions recorded
- 1 eruption