Tarr Steps is a medieval clapper bridge spanning the river Barle around five miles north-west of Dulverton — a line of 17 enormous stone slabs laid on piers across the water, with no mortar holding them together. Each slab weighs up to two tonnes. The bridge has been swept away by floods several times (most recently in 2012) and patiently rebuilt; it is at least medieval and possibly Bronze Age in origin.
A short walk leads down from the National Trust car park, and there is excellent walking up and down the river on both sides. The Tarr Farm Inn nearby serves food and is a useful stop. One of the most photographed spots on Exmoor.