Sampling recently erupted lava from Kilauea. There are samples taken like this archiving the eruption going back 30 years; the chemistry changes during the eruption can tell us how it evolves with time. Don’t try this on your own, they’re wearing special heat suits while doing it.
There’s a very happy volcano near the
Hawaiian Islands. As producer and
cinematographer Mick Kalber was taking
a helicopter flight to film molten lava
from above, the lava trickled into the
ocean, shifted inside the crater, broke
apart, and formed a giant happy face. SourceSource 2