Eldorado - Rio Grande River Rock. Individual manufactured stones with corners and straights over 230 square feet.
can be seen at website.
https://www.mdmstoneworks.com/products/eldorado-rio-grande-river-rock?variant=52706801221939
The issue will be loading them as they would need to be loaded in wheel barrels and closest parking is 30 feet away. Best to have 2 or 3 people help.
Valued at well over $2,000.00.