This short item so totally describes the pride of the stone mason and all that fits well into the time of the Bronze Age in particular when rock fitting became quite practical.
Recall that prior to bronze stone saws, shaping required rock pounding. This worked but was never easy. Thus as in Peru only small and rare structures were assembled.
After the Bronze Age, we slowly transitioned to using various mortars and that finally produced cement. Thus this item is surely Bronze Age.
I put in this image from Gotland which is not the first thing that one thinks of.