Now, I have seen a few threads on wall-climbing in AV before, but none of them were simple, easy to get to, or convenient. I decided, therefore, to show the easiest method of avoiding the afk debuff: walking right off the map.
NOTE: This is for Horde players. I'll attempt to find a simple method for Alliance, but as of right now, I have yet to find a mountain near the Alliance cave that can be reached by less seasoned wall-climbers.
Now, I suggest for this that you have a form of slowfall and/or an immunity bubble, and probably a mount (Rocket Boots Xtreme make it funny).
From the cave, go south to here. You will pass the Frostwolf Collectors in the tent and walk up the ravine behind a large pine tree.
Step 1 of 3 to jump across. Mount up and face that way.
Luckily, if you fall, you won't die, unlike other wall-climbs. Step 2 of 3.
Now you are past the "hard" part. See? I told you this was easy.
Walk straight from those two points. Make sure you angle correctly. If you start to slide, back up, because falling from here WILL kill you.
You can go one of two ways here. The right path takes longer but is safer for people who don't have an immunity.
Get your slowfall ready and jump off here. You should hit the ground before it runs out.
If you have an immunity (and Rocket Boots) you can go flying off the cliff here. It will land you where you should be without having to walk when you land.
Many lines later, you will be right here. If you wish to explore, there are some odd floating trees (as seen), as well as some cliffs that are prevalent in a lot of unmapped areas.
You will notice that you have now gone off the map. Congrats! It will be very hard to notice that you are actually afk now. Note that if you want to get back, you should probably bring a Frostwolf Insignia.
Once again, sorry, Alliance. I never really tried to find a mountain up north. As for Horde, this is a very fast, simple, yet underused method of getting off the map. It should take a grand total of 2-3 minutes to get off the map from the cave.
P.S. I know I have bad latency. It's the bane of being on a college network.