What are those granite markers on Exeter Hill?

When you drive northbound on  Rte 102 (Ten Rod Rd) in eastern Exeter, did you ever wonder about the three oblong granite slabs on the right, in front of Delmyra Kennels, near the intersection with South Rd?

Why are they there? 

Find out! Read the latest installment about the history of our town from EHA Vice President Gary Boden.

The Granite Monuments at Aspanansuck