Delivering the Black Key

Looks like you've received something from 샤모스. Thanks for your work. Now all you have to do is deliver that package to me. Oh, you don't need to come all the way to see me in person, though.

There's a 은밀한 그루터기 on the far right side of 엘나스. Just put the item under it, and another member will come and retrieve it.

Hmm. Alright, I'll assume you are very busy at this time. But don't make me wait for too long.

(There is a tree stump that looks rather suspicious. When you reach into it, you notice that it is hollow, as if man-made.)

(You push the key into the hollow space inside the tree stump.)

(The stump looks just like any other tree stump.)

(There is a tree stump that looks rather suspicious. When you reach into it, you notice that it is hollow. It is man-made. 검은 그림자 told you to put the item there.)

You've yet to find the 은밀한 그루터기? All you have to do is place the item you received from 샤모스 on the far right side of 엘나스.