Before revision: Devil's Tower, Wyoming, a prominent basalt (traprock) landscape featureThe term traprock (or basalt) mountains, ridges, (or just traps) is used to describe elevated landscape features made of the rock known as basalt and its close relatives.
After revision: Devil's Tower, Wyoming, a prominent basalt (traprock) landscape featureTraprock (or basalt) mountains, ridges, (or just traps) are elevated landscape features made of the rock known as basalt and its close relatives.