woodtown

Although partly collapsed on its supports and overgrown with bracken and scrub, this is nonetheless a noble megalith.

when complete it would have stood 15 feet high at the chamber entrance, where there now survives only the broken portion of one of the great portal stones, against which the massy capstone leans, its other end resting on the ground. A second portal stone nearly 15 feet long, lies fallen alongside.

Borlase believed this to be a distinct class of tomb - an 'earth-fast' dolmen, so-called from the capstone's contact with the ground at the back (another example being Howth dolmen in the same county). However, the term is not recognised in modern archaeology.
It is of course possible that the back of the capstone was never raised up; but, as we have seen in other large monuments, such feats were well within the capabilities of Neolithic tomb-builders.<