Ok, so I was making a few runs to farm money/mats and try to find recipes I need from Basil and I eventually went to The Jelly Farm level. I cleared the part of the level that's accessible if you pay 3 energy then backtracked to go do the normal way. Then I went to the place where you spawn Jellies and Lumbers when you step on the grass, wiped them all from existence and then went to check on the top left corner.
Click for Image! :D
The other blocked way @.@
So I ran around a bit trying to figure out how in the world I was supposed to get in there. Once I got tired, I Googled a bit and found a link that sent me to the SK Wiki article about Jelly monsters. On the Contents thingy at the top of the article I noticed the name of a monster I never saw before: Jelly Green Giant
I read the thread it links to so don't start with "The answers are there, Y U Post this useless thread? D:<" I'm making this thread in hopes that an admin or dev can tell us if they plan on adding the Jelly Green Giant again or if that place will forever be taunting us (Yes, I saw Poseidon's post saying that he destroyed new players but I bet they could figure out a way to make that area only accessible on Tier 3.). Or maybe they'll add it for some mission, when the Mission Mode thing is implemented?
Edited first post. Had to fix links to pics and wiki article.