SS have you ever seen Sardinia's chequered tomb? i was reading about it and thought of your threads.. spirals spirals everywhere, even underground in 5200 y/o tombs...

links for any who haven't read of it, with some terrific pics :-)

[link to www.forteantimes.com]

[link to www.stonepages.com]


We only assume they're tombs because we find dead people inside. If something happened and everyone with an underground bunker hid inside and never made it out, centuries later to be found by future humans, will they too decide they're tombs based upon a dead person?