Northmoor Hill Wood is an 8.7 hectares (21 acres) Local Nature Reserve in Denham in Buckinghamshire.
[1][2] The western area near the entrance has wet clay flora, with alder woodland, sedges, rushes, yellow archangel and star of Bethlehem orchids.
[1] Geologically, this is Reading Formation, dating to the Tertiary period.
The eastern part is chalk, and an old chalk quarry exposes layers dating to the Cretaceous period.
[3] There is access from Tilehouse Lane opposite Denham Aerodrome, and the site has a car park.