Sounding more like a mercenary from Star Wars than an archaeological site [good one - MegP Ed], Barpa Langass is, in fact, a Neolithic Chambered tomb located in North Uist.
Barpa Langass is classified as a Hebridean styled roundcairn which are defined by their simple, round form, slightly pronounced funnel entrances, narrow entrance passages and simple chambers. The earliest of these chambered cairns incorporate circles of upright stones known as peristaliths. These stones wrap around the cairns creating a stone circle. Virtually none of these sites have been excavated in modern times and therefore we know very little about them.
The internal passageway and chamber were seemingly remodelled in antiquity, probably after a collapse. However, the site has also suffered considerable disturbance over the last 200 years. In the late nineteenth century, a second chamber was said to be accessible by a passage from the north side. By 1970 this chamber was no longer visible.
More at
https://archaeologyorkney.com/2017/06/16/archaeology-in-uist-barpa-langass/
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