Reason : Xray Length : Permanent until satisfactory appeal Dug pretty much directly from ore vein to ore vein. Ex : Digging into a vein, digging directly upwards to the next, digging down and to the left to the next, etc. No one would randomly dig in the perfect direction to get from vein to vein. Photo proof isn't really all that great. To see for yourself, tp to the coords and look at the pathway.