Volcanodle
Puzzle #87 was Ruby.
Ruby is a basaltic submarine volcano that rises to within about 200 m of the ocean surface near the southern end of the Mariana arc NW of Saipan. An eruption was detected in 1966 by sonar signals (Norris and Johnson, 1969). Submarine explosions were heard in 1995, accompanied by a fish kill, sulfurous odors, bubbling water, and the detection of volcanic tremor.
Read about it at the Global Volcanism Program →
Global Volcanism Program, Smithsonian Institution
What the record says
Puzzle 87 ran on 4 Oct 2026 and the answer was Ruby, played with 6 guesses against 8 columns. On the record: Country - United States; Region - Northwestern Pacific Volcanic Regions; Type - stratovolcano; Tectonic setting - subduction; Elevation - submarine; Last eruption - 21st-century; Rock type - basalt; Historically observed - observed.
Beyond the grid the record adds Largest recorded eruption - VEI 1; Holocene eruptions recorded - 3 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
- submarine
- Last eruption
- 21st-century
- Rock type
- basalt
- Historically observed
- observed
Also on the record
- Largest recorded eruption
- VEI 1
- Holocene eruptions recorded
- 3 eruptions