Is it a decorative wall or are you needing to go to a certain height...
Dry stone walls are fun projects if you can spend the time... lots of work no mortar but you will need some dust or screenings to help in placement... It takes a lot of stone... at around 150 pounds per cubic foot. quite a few small to medium rocks... but it is a very durable wall when you get it done...
You can make a fairly sturdy wall if you make it about 2" wider at the base for every 1' high you go.
A 4 foot high wall, finished at 18" on top, would start out on a 26" base... That wall 10 feet long will take about 73 cubic feet of rock or around 5 and a half ton of rock ....
Time consuming but if you are following Alley Oop in the comics that is what he is doing in the current episode :laughing:... KennyV