Question

what do we call soil that remains frozen and never thaws?

Answer 1

Heyya!
The soil that remains frozen and ever thought is called permafrost.

Answer 2

It means that water between the rocks,soil, and pebbles, and even inside the rocks, has frozen. This frozen water iscalled pore ice. The ground freezeswhen the water in the ground becomes ice, as it did during the Ice Bowl. The ground thaws when the pore ice melts.