Burrow Mump is a striking landscape feature, apparently a natural hill, some 6 miles SE of Bridgwater. It is strategically placed immediately adjacent to the present A361 (which must represent an ancient route) and just N of the confluence of the Tone and the Parrett, two of the principal rivers of Somerset. The near terrain is part of the low-lying Levels, frequently flooded in winter; there are fine views towards Mendip to the N, the Quantock Hills to the W and NW, the hills to the S which run up to the border with Dorset & the several lias ridges in the E sector. The nearest settlement is Burrowbridge, at the foot of the hill on the SW side.

The ruined chapel stands on top of Burrow Mump, and according to VCH was substantially a 15thc building with a chancel, central tower, S transept and nave. A crypt was excavated outside the N wall of the nave and a N chapel on the N side of the chancel. It was rebuilt c.1663 and described as ruinous in 1733. In 1793 it was rebuilt again, as a single-celled structure with a W tower and an entrance in the centre of the S wall. In 1836-37 it was functionally replaced by a new church in Burrowbridge itself by Richard Carver, also dedicated to St Michael, and the Burrow Mump chapel fell into ruins again. It was given to the National Trust in 1946. What remains on site is of squared and coursed lias with red brick and Hamstone dressings. It consists of a W tower, a 3-bay nave and a S porch. The only features described here are two heads on the S face of the tower, which may be Romanesque.