A laccolith is an intrusive igneous body that creates a distinct physical elevation, making it a “positive” landform upon exposure. It forms when viscous magma is injected into horizontal sedimentary layers but cannot spread far. Instead, it pools and pushes the overlying crust upward into a dome-like shape. In contrast, landforms like calderas are “negative” or depressional features. Once the surface layers are stripped away by millions of years of erosion, the hard volcanic rock of the laccolith remains as a topographic high. Famous examples include the Henry Mountains in Utah, which showcase these dome-shaped intrusions.