The railway embankment creates a varied local topography with long and short, steep and gentle slopes. The habitats on the site range from limestone flora on the embankment top, to flower rich grassland, developing woodland and scrub on the embankment sides. Species such as ox-eyed daisy, mouse eared chickweed and bee orchid have been recorded at the site.

Hedgerows, a stream and an old orchard are also present within the reserve boundary.

The embankments were constructed in the early 1870's to form part of the Clifton Extension Railway. They span 450 metres in a shallow curve from Edward Street in the north west, to Clay Bottom to the east, crossing Royate Hill and the Coombe Brook at their centre.

The site was compulsorily purchased by the former Avon County Council in 1996, following a five-year high profile campaign by local people to save it from development.