21. Not far from the stones, there were also two giant passage graves , about 20 paces long. 22. On each summit is a prehistoric cairn, which may be miniature passage graves or house burial cists. 23. Passage graves are usually found in prominent locations, such as hill-tops, with spectacular views.24. All access to the passage graves is by guided tour only and all tours begin at the visitor centre. 25. There are interesting signposted walks which include the forest's megalithic passage graves , long barrows and dolmens. 26. The dolmens or passage graves lying within stone enclosures may be rectangular, trapezoidal or somewhat oval in shape. 27. Unlike other passage graves , the tomb at Fourknocks is not believed to have been covered over with stones. 28. Near K�vlinge is the site of the H�g passage grave , a Bronze Age barrow covering a neolithic burial chamber. 29. Bodowyr Burial Chamber is the central burial chamber of a passage grave of a type more frequently found in Ireland. 30. It had a side entrance; this type of grave is known as a " passage grave ".
