The first sight of Twyn Du and the stone from the lower slopes of Gadair Fawr. Pen Cerrig-calch and Pen Allt-mawr dominate the skyline. The stone is just in front of the dark treeline, to the right of centre in the picture.
Close-up of the cairn, showing the original stone construction (under the modern additions). Waun Fach is visible in the background.
Looking SW. The summit of Pen Cerrig-calch is on the left horizon.
Looking northwest, with Waun Fach on the right.
The impressive mound of the cairn.
The cairn in its landscape, covered in gorse in the centre of the picture. Looking west from the lower slopes of Rhiw Cwnstab.
Visible megaliths protruding on the south side of the cairn – possibly part of the cist?
Looking SSW. The shoulder of Y Das fills the left of the picture. Castell Dinas hillfort can be seen just to the right of the gorse bushes covering the cairn. The small square stones immediately in front of the bushes may have come from the cairn.
The cairn, looking SW. The recognisable silhouette of Mynydd Troed is on the left.
Y Das seen from Mynydd Bychan, looking out over Talgarth.
The fort lies in the wooded lower slopes of the Pen Tir promontory (centre), seen from the south.
Looking north, with Castell Dinas to the left and agricultural paraphenalia scattered about.
Seen from the west. Waun Fach dominates the centre of the picture.
The fort in the centre of the image, seen from the summit of Mynydd Troed. The Y Grib ridge is above the fort to the left, leading up to Waun Fach.
The view east along Cwm Sorgwm, with Pen Allt-mawr in the centre. The grassy mound of the tomb is in the foreground.
Looking SW across the mound towards Llangorse Lake and Pen y Fan.
The top of the mound, with visible orthostats (and authentic sheep poo).
The promontory fort is at the right-hand end of the ridge ahead.
The view north, down the steep slope of Mynydd Llangorse, with Mynydd Troed ahead. The chambered tomb is visible above and to the right of the parking area, on the lower slopes of the mountain.
Looking SE from the fort, along the steep sided Cwm Sorgwm, with Pen Allt-mawr blocking the central horizon.
Looking SW from the fort. The bulk of Mynydd Llangorse itself is on the left, Llyn Syfadden (Llangorse Lake) and the wooded slopes that conceal Allt yr Esgair fort are in the centre, the central Beacons fill the horizon.
Looking north along the ridge of Mynydd Llangorse, the fort is situated at the rocky outcrop straight ahead. Mynydd Troed fills the right of the picture.
The central and northern cairns, looking towards Pen y Fan.
The huge (and hugely damaged) southern cairn.
The cairns from the south, with the massive southern cairn in the foreground.
Pen-yr-Heol Las, with Pen y Fan to the left.
The low, grass covered mound. Looking towards Pen Allt-mawr.
The central excavation damage, with Pen y Fan and the central Beacons on the horizon.
Looking ENE, to the Black Mountain summits of (l-r) Waun Fach, Pen y Gadair Fawr and Pen Allt-mawr.
The flattened round cairn, with modern cairn on top. Looking SE.
The stone in its landscape – the ridge on the horizon is covered with Bronze Age cairns.
The “thicker” side of the stone, seen from the west. Note interesting lichen pattern on the upper third of the stone.
Approached from the SW, the Latin inscription is clearly visible.
Looking NE. Solarised and bleached out to the right are the snow-capped Pen-y-Fan and central beacons. The cairn’s original construction does not include the stones dumped on top of it by passing walkers.
The low cairn, with Cray Reservoir away to the NW at the foot of the escarpment.
The stone in its landscape, with Fan Llia behind.
The moss-covered monolith, looking down the valley.
Detail of the sandstone slabs of the chamber.
With the lower slopes of Pen Cerrig-calch behind.
Looking along the passage into the roofless chamber.
Pen Gloch-y-pibwr on the right, Pen-y-Fan and the central Beacons on the skyline. Seen from the path to Pen Cerrig-calch.
Close up of the SW cairn, showing the stone construction and damage caused by excavation (and walkers).
The smaller NE cairn, looking NNE to Pen Allt-mawr.
