Volcanodle
Puzzle #99 was Iwakisan.
Iwakisan volcano, symmetrical on all but its western flanks, has a 2-km-wide summit crater filled by a lava dome flanked by six explosion craters. Three more lava domes are found on the western and southern flanks of the andesitic volcano. Eruptions have been reported since 1600 CE, consisting primarily of small-to-moderate phreatic explosions.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 99 ran on 16 Oct 2026 and the answer was Iwakisan, 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 Largest recorded eruption - VEI 3; Holocene eruptions recorded - 29 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
- stratovolcano
- Tectonic setting
- subduction
- Elevation
- 1500-3000
- Last eruption
- older-Holocene
- Rock type
- andesite
- Historically observed
- observed
Also on the record
- Largest recorded eruption
- VEI 3
- Holocene eruptions recorded
- 29 eruptions