The reserve consists of a portion of a small valley with a stream and an elevated area of grass and shrubs on one side of it. A footway suitable for wheelchairs connects a stonewalled raised bed with St Georges Crescent, giving access to a 'touch and smell' garden. The grassland alongside the pavement is regularly mown but an area beyond is left to grow between late April and August. After the plants have flowered the grass is cut and the 'hay' removed.

A variety of wild flowers such as cowslips, vetches, yellow rattle, meadow buttercup, red clover and self-heal have been introduced into this grassland to create a small wildflower meadow. Steps lead down from the area of grass and shrubs to the sheltered valley and stream below.

This portion of the reserve is a small but important link in a chain of woodland cover for birds. Good numbers of familiar birds such as blackbird, goldcrest, robin and willow warbler are regularly seen. The glen also acts as a resting and stopping off point for migrants, including notable species such as barred warblers, firecrest, pied and red-breasted flycatchers and lesser whitethroat.