Hi all - I'm looking for some advice. I have a long driveway - 1,100 feet. The first 1,000 feet runs along the edge of a level pasture. The last 100 feet slope down to the house (moderate-to-steep slope). The soil is red clay. What kind of gravel would you put down?? I've been told two different things. One - a layer of 3" rock and then a layer of 'crushed-run' gravel. Two - just a thick layer of the 'crushed-run' gravel. There's disagreement about the value of the 3" rock. I've been told that it will not sink as much into the ground. But I've also heard that it doesn't make a difference. Anyone had any experience with this??