Armoured with chitin plates and with mandibles dripping with corrosive secretions, these creatures carve natural tunnels through the earth and stone of the deep places.

CR3 Minecrawler - Large Beast3 HP28 Initiative+0 Speed-30(6) AC18(T9,FF18) Bite+7(2d6+7+d4acid) Abilities21,10,17,1,13,6 Saves+6+3+2 SQ Darkvision, tremorsense, Acid stream 1/day 4d4 DC14 Rewards - 900 souls, 5% humanity, 20% titanite splinter