We’ve discovered a new toy, the Niffen Diggin’ Mits, that should help when traversing Zaralek Cavern. After a 10s channel similar to a Hearthstone, the toy teleports you to the Niffen home city of Loamm, a fairly central location in Zaralek Cavern.
There don’t currently appear to be any positional requirements when using the toy, so you could potentially use the Niffen Diggin’ Mits to get to Zaralek Cavern similarly to a Dalaran Hearthstone for Dalaran.