This is dry eco rock from BRS from their "shelf rock" line (flat pieces).
60lbs in total, sizes range from a few inches to just over a foot in diameter, with the largest (see below) about 12"x18".
$30 for the large piece bottom piece by itself, otherwise $2 per lb, or take the whole lot for $60.
Note - the large one can be made into two separate pieces but I'd rather the buyer of the rock make that decision.
