I have about a ton of loose limestone rock. Dug out of my back yard. A pile about 2 feet tall by 8 feet long and 4 feet wide. Nothing bigger than a watermelon, and mostly flat-ish rocks.
All native, organic, natural limestone rock. Clean fill.
Great for a dry creek bed.
Currently its in my back yard, but I can bring it around to the front drive to make it easier to load.