White gravel rocks have white pebbles in the middle, archaeologists say

White gravel boulders are hard to find, but if you do manage to find them, they are hard on your hands.The pebble-like gravel that’s carved into these rocks has been quarried, but what’s left is a strange white-gray material that scientists are only beginning to unravel.It’s not just a natural wonder.It’s a mystery because it’s […]


Continue.. White gravel rocks have white pebbles in the middle, archaeologists say