Ashcombe Bottom (TQ 373 119) is a 66 hectares (160 acres) woodland valley owned by the National Trust that runs south from Blackcap, East Sussex, England.

The area is nested in the South Downs and can only be reached by walking or cycling from Lewes, Falmer, Ditchling Beacon or up the Clayton to Offham escarpment from Plumpton.

[2] The area is said to have acted as cover for Simon De Montfort’s troops waiting to commence the Battle of Lewes in 1264, and later to have been a place of attempted refuge from the slaughter.

It has scrub-grown oaks and silver birch, nut-laden hazel trees, tangling bryony skeins, rosebay willowherb, berry-laden spindle and honeysuckle and occasional wood sage.

[2] The western valley side has the older woodland and in the open areas there are patches of bluebell, with early purple orchid, barren strawberry and primrose.

[2] Since the National Trust took it over the gentle slopes descending from Broad Shackles (TQ 372 113) have recovered from being ploughed and now have barren strawberry, basil and autumn ladies' tresses orchid growing as well as devil's-bit.