The Mill Folly Grotto including stone bridge, south of the Afon Llifon is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 September 1998. Garden feature.

The Mill Folly Grotto including stone bridge, south of the Afon Llifon

WRENN ID
half-step-bracken
Grade
II
Local Planning Authority
Gwynedd
Country
Wales
Date first listed
8 September 1998
Type
Garden feature
Source
Cadw listing

Description

Irregular rustic rubble garden feature with picturesque pointed arches. There are two levels, the lower level of which was a pool and the bridge carried the footpath over the outlet into the Afon Llifon. There is a complex series of grotto-like spaces including an underground chamber reached by a narrow passage and a further small chamber at the lower level. The pool was fed by a reservoir on the hill towards Fort Williamsburg via a leat from the top of the cascade to the east. The single-arch rubble bridge has voussoirs and a modern timber deck.

Detailed Attributes

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