https://www.historicenvironment.scot/visit-a-place/places/holm-of-papa-westray-chambered-cairn/

oh no....this isn't going to be another equinox 'in the night garden' number, with makka pakka - aka Richard Tomlinson's fir-king twats etc etc courtesy of tim Berners-Lee....is it, dazzlenation?....let me see...12 cells, apparently - could be more serious, than that....might be about apostle programming....see previous notes upon Anthony blunt etc etc...go figure.

https://commons.wikimedia.org/wiki/File:Inside_the_chambered_cairn_on_the_Holm_of_Papa_Westray_-_geograph.org.uk_-_1364571.jpg