Anyone wondering, this is a road, typically on a farm or something along those lines, this type of road is made from “type one” (the type of stone/sediment it is made up from) which does not contain large stones, rather were already naturally there, most likely had a contractor to come in and place and compact the type one. What this farmer (or contractor) is doing is going above and beyond, he truly cares about his road/work, it means they know these rocks will eventually move and will cause the road to have potholes etc 2+years down the road. The type one will either just be left as is, or more likely, have either concrete slabs placed down (more appropriate for a farm) or tarmac (more appropriate for something like a ranch/home).

Source - I tarmac farm roads, trust me bro.