The Heritage Trust wrote:
Two examples of earth-fast, sub-megalithic tombs; the first in Jharkhand, North-East India and the second in Pembrokeshire, Wales which might be of interest.
Obviously these form perhaps the simplest type of chamber... but the resemblence is nevertheless striking. All the examples I'm aware of are indeed on the Pembrokeshire coast - anyone know of any within the Uk that are not? Have any grave goods been recovered from these sites hinting at seafaring contact with the other side of the world?