Rujm in Arabic can mean tumulus, cairn or stone heap. A rare dolmen still covered by its original cairn. They were covered by a stone cairn or earth barrow. There is another stone cairn just on the northeast side of the stone circle. On the moors above is a memorial cairn. Several cists are sometimes found close together within the same cairn or barrow. The stones that remained were built into a cairn to honour the dead. The holt is built under tree roots or a rocky cairn, more common in Scotland. It is fairly common for the circle to contain a ring cairn and cremation remains. The area is notable for Aghanaglack chambered cairn. After building a cairn, Whymper and party stayed an hour on the summit. A traditional and often decorated, heap-formed cairn called an "ovoo" is made in Mongolia. The name has been explained as deriving from Old Norse "hreyrr", "cairn", or "boundary cairn". It stands on the Cairn and Dalwhat Waters. In Portugal a cairn is called a .