Rant: My buddy Dave the geologist totally changed how I look at old quarry sites

He was rambling about how those Roman quarry marks aren't just random grooves, they're like ancient GPS coordinates for where the stone came from. Never even crossed my mind before he said it, but now I can't unsee it. Anyone else have a random friend drop knowledge that shifts your whole view?.

3 comments

3 Comments

the_sam1mo ago

Wait, are you sure those are Roman quarry marks? My buddy who's an archaeologist says most of those grooves are actually from medieval times, not Roman. He told me the Romans used different techniques like wedge holes and channeling, not those long scratch marks you see on old quarry walls. The Romans were BIG on efficiency and they left pretty distinct tool marks that are way more uniform than what people usually think. Those GPS-style marks you're talking about are more like a medieval quarryman's signature or tally system.

henry_martinez1mo ago

That bit about "GPS-style marks" being tally systems makes a lot of sense, @the_sam. I've seen similar notches on old barn beams up north that farmers used to count logs or work days, no connection to Romans at all. Maybe we're just looking at medieval bookkeeping and not some ancient navigation trick.

rileyellis25d ago

the_sam's point about medieval tally marks makes sense. I had a neighbor who restored old furniture and showed me similar notches on a 1700s dresser that he said were the original maker's inventory system. Turns out people have been leaving those scratch marks for centuries to track their work, not to map out stone locations. It completely changed how I look at any old building or quarry wall now.