Siambri Ddu

No. 1490 of 2,223 in Bannau Brycheiniog (Brecon Beacons), No. 9 for caves. Nature, 5.7 km from Abergavenny.

A cave entrance in the hills of Bannau Brycheiniog.Written by Claude from the facts on this page (describe-v1, 2026-10-31).

Facts

Fee
FreeOpenStreetMap, checked 2026-10-31
Best months
Any time of yearoffyougo rules
Getting there
Directions in Google Mapswhat3words addressOpen in OpenStreetMap

Why it ranks here

Score 0.56 for any trip, from the same formula as every place.

Stay nearby

Within 8 km, best first
Bear HotelGrade II* listed, in CrickhowellHistory and heritage
Riverside Caravan ParkStay, in CrickhowellCamping
Rheld Farm CLStay, 1.2 km from CrickhowellCamping
Pyscodlyn Camping and Caravan SiteStay, 3.8 km from AbergavennyCamping

Food and drink nearby

Within 8 km, best first
The Dragon InnGrade II* listed, in CrickhowellFood and pubs
Coach & Horsesin Abergavenny, just outside the parkFood and pubs
Hen & chickensin Abergavenny, just outside the parkFood and pubs
Butterflies Bar & Kitchen7.0 km from Abergavenny, just outside the parkFood and pubs

If it rains

Within 8 km, best first
Big Pit: National Coal Museum9.9 km from Crickhowell, just outside the parkHistory and heritage
Abergavenny Museumin Abergavenny, just outside the parkHistory and heritage
Blaenavon Iron WorksScheduled monument, 7.1 km from Abergavenny, just outside the parkHistory and heritage
Baker Street Cinemain Abergavenny, just outside the parkRainy day

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