Description: The furthest vein in the new Rift cave is unminable. It is visible and clickable yet cannot be reached. I tried several times, in vain. The cave is next to the Dark Elf city, on the way back up from the Rift. The vein is in the far end of the cave.
Location: The Rift - Adamantium cave /don't remember the exact name/
Verified: I saw it, so did a few others (Aragwen, Pibemanden, Dezza, FunnyPseudo)
Reproducable: The vein is still there, since it's technically indestructible