A troll cache. A large box in a ground, with 2 food containers and a small chest box.
A chain cache. A long chain which you must pull out of the tube before you're able to log. And a camouflage looking like a shit ;)The cache is withing a trigger mechanism. You must turn the handle, and the mechanism will open.
Chinese-stick cache. You must take some twigs and push the lab tube step-by-step above, until you can grab it.