Assertion: volcano's lava lake | /r/HasProperty | estimated within the s crater
Facets:
value: at about 25 m
type: LOCATION
Source sentences:
text: A group of English geologists who visited on 15-16 January 2004 observed an active lava lake estimated at about 25 m across almost in the center of the lower lava floor within the S crater (figure 16) with a turbulent lava surface ~ 3 m below its rim.