Volcanodle
Puzzle #31 was Anatahan.
The elongate, 9-km-long island of Anatahan in the central Mariana Islands consists of a large stratovolcano with a 2.3 x 5 km compound summit caldera. The larger western portion of the caldera is 2.3 x 3 km wide, and its western rim forms the island's high point. Ponded lava flows overlain by pyroclastic deposits fill the floor of the western caldera, whose SW side is cut by a fresh-looking smaller crater.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 31 ran on 9 Aug 2026 and the answer was Anatahan, played with 6 guesses against 8 columns. On the record: Country - United States; Region - Northwestern Pacific Volcanic Regions; Type - stratovolcano; 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 - 4 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
- United States
- Region
- Northwestern Pacific Volcanic Regions
- Type
- stratovolcano
- 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
- 4 eruptions