Tulach an t'Sionnaich , is cairn at the northern end of Loch Calder in Caithness, Scotland that has been expanded over time. It was partially excavated in 1961 und 1963. Before the excavations there was just a 60-metre long and 12-metre wide cairn with no recognizable structures. The cairn is oriented from northwest to southeast; the southeastern end being higher ) and somewhat wider. Subsequently a ditch was cut some 15 metres from this end of the cairn.
The excavations revealed that the monument was initially a square passage tomb within a round cairn of 10.5 metres diameter. Its 2.1-metre long passage faced south. The external passage entrance was sealed by the circular stone wall that enclosed the cairn.
Copyright: CC 3.0