Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Remains of East Blockhouse north of Rat Island

A Scheduled Monument in Angle, Pembrokeshire (Sir Benfro)

More Photos »
Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 51.6822 / 51°40'55"N

Longitude: -5.1243 / 5°7'27"W

OS Eastings: 184117

OS Northings: 202777

OS Grid: SM841027

Mapcode National: GBR G4.J095

Mapcode Global: VH1RX.4ZCB

Entry Name: Remains of East Blockhouse N of Rat Island

Scheduled Date: 28 December 1978

Source: Cadw

Source ID: 2718

Cadw Legacy ID: PE398

Schedule Class: Defence

Category: Blockhouse

Period: Medieval

County: Pembrokeshire (Sir Benfro)

Community: Angle

Traditional County: Pembrokeshire


The monument consists of the remains of a blockhouse, a small isolated fort intended to serve as a strongpoint, dating to the medieval period and erected as part of the Haven defences. The remains lie on a promontory, ocvered with short grass and gradually will undoubtedly crumble into the sea. Of the eastern blockhouse, three walls of a stone built rectangular structure remain, with a filled in doorway. The walls stand to a height of c. 12 ft. The fourth wall has presumably fallen into the sea.

The monument is of national importance for its potential to enhance our knowledge of medieval or post-medieval defensive organisation. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structure itself may be expected to contain archaeological information concerning chronology and building techniques. The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.