The site is a small, boulder clay subsidence pond with associated marginal vegetation and wet willow woodland.
Located to the west of Annitsford on Sandy's Letch, a tributary of the Seaton Burn, the pond was formed between 1958 and 1963 via an inlet from Sandy's Letch on the eastern boundary of the LNR, draining back into the stream at the southern edge of the reserve.
The reserve is of significant value as a semi-natural habitat in an urban environment, and as an educational resource for local schools and the community.
Wildfowl found on the site include mallard, mute swan, coot, moorhen and pochard.
The population of breeding pochard is important within a local context. The site also has a rich amphibian and invertebrate population, including common toad, common frog and the azure damselfly.