They're saying it's "not a mass grave" because it's only about 20 people, but still, a whole bunch of mysterious human remains were discovered just a few feet underground during an excavation underneath a historic building at Fort Mason. AsBay City News reports, more 19th century bones keep showing up since they found the first ones on Monday, along with buttons, pieces of bottles, and an intact bottle that reads "hair tonic." Yes, whoever one of these dead guys was, he was at least a little bit vain, and was buried with his styling product.

"These mysteries are more profound than we were expecting," says one of the archaeologists on site, and we think by "mysteries" he's referring to the cluster of remains and not the hair tonic. To clarify, there was no cemetery on this site, and it's going to take a fair amount of primary source sleuthing to figure out why there were a bunch of dead people buried here sometime between the 1850s and 1880s. Actually, we may never know.