|Elevation||112 m (367 ft)|
The south side of the summit of Knowle Hill is home to the grass Wood Small-reed (Calamagrostis epigejos). The population of this plant forms a circular patch some 20 metres wide, which is visible from Bishop Sutton 1.2km south across Hollow Brook. It has been suggested that this patch is a single clone which has spread by means of underground rhizomes, and may be 200 years old.
- Janes, Rowland (ed) (1987). The Natural History of the Chew Valley. Biografix. ISBN 978-0-9545125-2-1.CS1 maint: extra text: authors list (link), p.63
- Access Land: Knowle Hill Bath and North East Somerset council website, retrieved 24 July 2010
- Chew Valley Three Peaks walk, retrieved 24 July 2010
- "Two Rivers Way". Long Distance Walkers Association. Retrieved 25 July 2010.
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