Ryan,I think you're right about the size of the limestone. I have 18 tons of rip-rap being delivered this sat. that I will use along the sides of the pond in place of the #4. If the water moves that I'm giving up!! Ewest, did you receive the pics yet? I sent them 2 days ago to your e-mail. I got a notice back saying it was too large for delivery during normal business hours and it would be sent later.