It seems to be a bunch of stones. Not sure if the location is correct since it is quite old.

https://photos.google.com/share/AF1QipNBTBHzsWwb-FU95YO3Z6uPe6BkIRFVz40NZFuPNYawm5m0DUZwQ6MkNKUpgbt0BA?key=c2paMmNKS2NBNW9DOUdKN2pnVlgtVmFiM2htR3lR