This very large mound is right next to the visitor centre. You can't possibly miss it! In the museum they have the Time Team episode playing on a loop when they visited and excavated the mound in 1994.
Also outside the visitor centre is another smaller stone. I asked the lady in the museum if she knew anything about the stone. She said that it was unknown at present if the stone is prehistoric or connected to the time of the Lord of the Isles. She added that a chap was due to visit the site later this year to carry out a dig. It was hoped that more can be discovered about the stone then.
The Time Team dig revealed animal bones, a flint arrowhead of Bronze Age type and a bone disc within a stone-lined chamber on top of the mound. There was found a Bronze Age cairn next to the chamber.