lava tube

InsideanEruption

vent

1

MagmaandgasrisefrombelowEarth’s surface.

2

Risinggasespushonthesealed vent.

3

Gasesexplode,breakingthe seal.

4

Ashandgasshoot upward.

5

Lavaflowsacrossthe land.

6

Theexplosionends.Thesealcloses again.

Restart

magmaand gas

HowItWorks

TheplanwastohiketothetopofSantaMaría.Here,theteamcouldseethelavadomesfromabove.Beforeaneruption,theventofthedomeis sealed.

Magmaandgasesaretrapped.Pressurebuilds.Thesealbreaks.Magmacomesoutas lava.