Skull and Crossbones (1771), a photo by midgefrazel on Flickr.
Mr Melatiah Lothrop
Burial Hill, Plymouth, MA
As listed in A Guide to Plymouth's Historic Old Burial Hill by Theodore P. Burbank (#401 page 43 died 6 July 1771 aged 70)
At once time, old gravestones were re-set in concrete as it was thought to better preserve them. (Probably not.)
In this case, this gravestone may have been set in concrete to deter theft as his grave is the oldest on Burial Hill. Early graves of the first English settlers were marked with wooden markers, fieldstones or not at all.
This is a close-up of the oldest surviving gravestone on Burial Hill in Plymouth, MA. It is very hard to photograph since it is located in a heavily treed section of Burial Hill.
If you click on this photo, it will bring you to Flickr where I have attempted a transcription of the carving.