Question

If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a _____.

lava dome
geyser
volcanic neck
flood basalt plateau

Answer 1

Volcanic Neck

Answer 2

The answer is a volcanic neck. A volcanic neck is the hardened lava that formed in a volcanic vent that has been exposed by erosion. They often look like jagged, rectangular blocks sticking up out of the ground. One prominent example of one is Devil's Tower in Wyoming.