The Motherlode (quest)

Objectives
Investigate the cave that Excavator Karla told you about.
 * Investigated Excavator Karla's Cave

Description
Pst... Come 'ere! I just got a tip about a cave on this island that is a treasure trove of loot! This could be my biggest score yet.

Problem is, I uhh... sprained my ankle. Yeah, I would be right there with you battling those demons to get this treasure, but I shouldn't be putting any weight on this leg of mine. Shucks.

How about you go check on this cave and report back to me. I'll mark your map where the cave entrance is. I've been told it's pretty hidden, so you've got to look around.

Rewards
You will receive:
 * Wyrmtongue's Cache Key
 * 16,450 XP
 * +75 reputation with Armies of Legionfall
 * +75 reputation with Armies of Legionfall

Progress
You find anything?

Completion
Looks like we hit the motherlode! Now all we need is a key... Huh. Why don't you go work on getting some keys for these chests and I'll hang out with goofy-nose here.