Butterfly Passage

Butterfly Passage is an area accessible from the Alien Valley.

Features
The Butterfly Passage is a surprisingly linear network of platforms and ladders, leading upwards. Initially you'll enter from a red, bloody butterfly. An optional path can be found by going to the right after climbing a couple of ladders, that leads to a platform with a plant-like NPC, which reacts to a variety of effects.

At first, the path will be surrounded by butterflies, plants and whisks, but those elements get slowly replaced by whipped cream covered by ladybugs. This finally leads to a monstrous slime monster being prodded at by a fork and spoon and crawled all over by ladybugs can be found at the top of the world, which leads to Whipped Cream World.

A small, isolated section of this area can be entered from Whipped Cream World, which contains a giant ladybug surrounded by flowers and butterflies. Entering the back of this ladybug leads to the Overgrown Condominium.

Directions
Nexus → Red Streetlight World → Bleeding Heads Garden → Alien Valley → Butterfly Passage

Trivia

 * Before version 0.111c patch 1, this world connected with the Butterfly Forest.
 * You were able to destroy the construction sign blocking the grayish monster's mouth in the Butterfly Passage by usign the Chainsaw effect, leading to a house with a strange white fish and weird flower-like protrusions from its back, which teleported the player to the Blue Forest. Nowadays, the monster is unreachable.