Cave with Spring and Rockery About 45 Metres South of South West Corner of Walled Garden is a Grade II listed building in the Tewkesbury local planning authority area, England. First listed on 26 November 1986. Cave.
Cave with Spring and Rockery About 45 Metres South of South West Corner of Walled Garden
- WRENN ID
- sunken-passage-nettle
- Grade
- II
- Local Planning Authority
- Tewkesbury
- Constituency
- Forest of Dean MP: Matt Bishop (Lab)
- Country
- England
- Date first listed
- 26 November 1986
- Type
- Cave
- OS grid reference
- SO 791 192
- Coordinates
- 51.87118, -2.30357
- Source
- Historic England listing
Description
This is a cave with a spring and rockery located about 45 meters south of the south-west corner of the walled garden at Highnam Court. It was created in the mid-19th century by the landscape designer James Pulham for T. Gambier-Parry. The cave is constructed from Pulhamite, a type of artificial stone, and features a large, irregular pile of boulders that forms a rockwork surround at the entrance. A stream flows from the cave, fed by a lake situated higher up in the garden.
A path at lake level winds around the rockwork to a platform above the cave, which is enclosed by another wall of rocks. In front of the cave, there is a small flat area on the edge of the lake, with a narrow, irregular space of water and a romantic arrangement of rocks and plants in the lake. This cave and rockery are an important part of the garden designed by Pulham, which is regarded as one of the best and largest surviving examples of his work.
Local climate
Cave with Spring and Rockery About 45 Metres South of South West Corner of Walled Garden receives an average of 770 mm of rain a year. This makes it drier than 62% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 53% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 66% of listed buildings. Of these, 17 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
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