Volcanodle
Puzzle #36 was Aniakchak.
One of the most dramatic calderas of the Aleutian arc, the 10-km-wide Aniakchak caldera formed around 3,400 years ago during a voluminous eruption in which pyroclastic flows traveled more than 50 km N to the Bering Sea and also reached the Pacific Ocean to the south. At least 40 explosive eruptions have been documented during the past 10,000 years, making it the most active volcano of the eastern Aleutian arc.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 36 ran on 14 Aug 2026 and the answer was Aniakchak, played with 6 guesses against 8 columns. On the record: Country - United States; Region - North America Volcanic Regions; Type - caldera; Tectonic setting - subduction; Elevation - 500-1500; Last eruption - 20th-century; Rock type - andesite; Historically observed - observed.
Beyond the grid the record adds Largest recorded eruption - VEI 6; Holocene eruptions recorded - 17 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
- North America Volcanic Regions
- Type
- caldera
- Tectonic setting
- subduction
- Elevation
- 500-1500
- Last eruption
- 20th-century
- Rock type
- andesite
- Historically observed
- observed
Also on the record
- Largest recorded eruption
- VEI 6
- Holocene eruptions recorded
- 17 eruptions