Why might a laccolith be detected at earths surface before being exposed by erosion?

A laccolith may be detected at Earth's surface before being exposed by erosion because it causes uplift in the overlying rocks, creating a dome-like structure. This uplift can be visible through topographic mapping or geophysical surveys before the laccolith is fully exposed by erosion processes. Additionally, the resistant nature of the igneous rock forming the laccolith may also prevent erosion, keeping it buried beneath the surface for an extended period.