Holy Well at Trelowthas Approx 50m West of Trethowlas Farmhouse is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 17 October 1984. Holy well.

Holy Well at Trelowthas Approx 50m West of Trethowlas Farmhouse

WRENN ID
lunar-mantel-crag
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
17 October 1984
Type
Holy well
OS grid reference
SW 884 468
Coordinates
50.28363, -4.97127
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Holy Well at Trelowthas, located approximately 50 meters west of Trethowlas Farmhouse, is likely of 14th-century origin, although it has undergone significant restoration. Historically, a chapel was licensed to John Bodrugan in 1379. The structure is built from shale rubble and granite, integrated into the bank. The entrance features a chamfered, two-centred dressed granite arch, which has probably been reset over rubble jambs. The roof is corbelled to follow the shape of the doorway and is topped with flat capstones.

Local climate

Holy Well at Trelowthas Approx 50m West of Trethowlas Farmhouse receives an average of 890 mm of rain a year. This makes it wetter than 65% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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.

More on this building

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