Shard O'Glase said:I I'm sure someone can point you to a weights table, but I suspect that 1 cubic foot of rock probably comes in around 100lbs. 8,000,000 cubic feet would therefore be what 800,000,000 pounds 1d6 for every 200 lbs+1d6 for every 10' fallen. So from a 10' drop you'd do 4,000,001d6 in damage. OUCH