sulphur

sipoholon

geothermal

volcano

hot

spring

boiling

aerial

view

crater

sumatra

eruption

thermal

geyser

gas

heat

sulfur

landmark

indonesia

volcanic

geology

steam

fumarole

landscape

activity

mountain

fumes

scenery

travel

hill

nature

outdoor

adventure

drone

from

above

tropical

tourism

vacation

outdoors

dangerous

cloudy

slope

water

scenic

rock

mineral

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