Assertion: volcano's lava lake | /r/AtLocation | 13° 3611n
Facets:
value: based on gps measurements
type: OTHER
Source sentences:
text: The lava lake was located, based on GPS measurements, at 13° 36' 11" N, 40° 39' 49" E. Cyclic activity, approximately every 4 hours, consisted of the thin, dark crust on the lake surface splitting and causing a "fantastic" bubbling of the liquid lava across the entire ~12,000 m2 of the lake surface.