I attended a lecture in the early 90’s by a mining engineer. He’d been sent to Russia to look at opportunities for joint ventures. He mentioned that, thanks to communism, ubiquitous state ownership of everything, one of the issues was land ownership. there were no comprehensive title registries - obviously a problem when trying to “own” and mine a plot of land. Many of the supposed titles for land he said went back to the days of the Tsars, where deeds lacked precision, would describe a plot like “start 40 paces west of the big boulder by the fork in the road, proceed for 200 paces then turn north for 400 paces.”
I suppose, however, the military had more precise maps. I recall reading during the cold war that any maps the USSR actually published might be far off to confuse their western enemies, not to mention omitting some big cities with military industries.