there's a sick quarry that i just went to for the first time a couple of hours ago, but it's in columbus.  the one is like twenty feet and it's super sick.  straight drop to like fifty foot deep water.  the other is a little over forty feet but you have to run really fast, clear some trees, and some rock outcropping.  it's hard as fuck.  i did a gainer off of that one and it was the scariest thing i've ever done.