If a Stonehorn makes a successful charge, it inflicts Impact Hits (3D3) instead of making its normal close combat attacks. In addition, if when calculating the charge range, the two highest dice score a total of 10 or more, then 1 is added to the dice roll, for a total of 3D3+1 Impact Hits. This doesn’t prevent the Stonehorn from using its Thunderstomp later in the same turn. Also note that any crew can attack normally.