Tunnel Passage at Fort Williamsburg is a Grade II* listed building in the Gwynedd local planning authority area, Wales. First listed on 29 May 1968. Tunnel.

Tunnel Passage at Fort Williamsburg

WRENN ID: long-beam-sage
Grade: II*
Local Planning Authority: Gwynedd
Country: Wales
Date first listed: 29 May 1968
Type: Tunnel
Source: Cadw listing

Description

Tunnelled through the 'defensive' mound bordering the parade ground. Stone walled passage descending all the way from the tower and turning into the tunnel beneath a brick arched opening. Within the tunnel the sides are cement rendered and the pavement has brick tracks.

The fort is roughly square with redans to the four corners and with surrounding ditches and revetment walls.

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