Ive seen stenciled graffiti that read "VOLCANO MASSAGE 01*-********"

but seriously...we do have volcanos. This is supposedly an active one https://www.volcanodiscovery.com/malaysia.html

and I've done metal detecting around extinct volcanos b4. We also have mud volcanos...some say the mud is good for the skin...I dunno.

That name always gives me a chuckle...and reminds me of the time filipinos threw a hand-grenade into a lahad datu police station...they really bom balai. Fortunately no one was hurt (if I recall correctly).