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
flood basalt plateau
volcanic neck

Answer 1

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 **volcanic neck**. Volcanic necks are formed from the hardened magma within a volcano's vent, which can erode away the surrounding material, leaving the harder rock exposed.