Secret Level (Whimsyshire)
The glowing rainbow crevasse that can be unlocked during Act 1 is the portal to Whimsyshire provided that you have collected the correct ingredients.
Below is a video along with detailed instructions.
VIDEO Step 1 - Acquire the Following Items:
* The Black Mushroom from Cathedral level 1 in Act 1
* Leorics Shinbone from the fireplace in Leorics Manor in Act 1.
* Liquid Rainbow in a Mysterious Cave from a Mysterious chest in the Oasis Act 2. To enter the cave you must find a random spawn vendor in the Oasis.
* Wirts Bell from a vendor in the Bazaar Act 2. This item costs 100,000 gold.
* Gibbering Gemstone drops from Chiltara a rare spawn in the Frozen Cave Act 3. This is in the same area that you destroy the ballistics.
* The recipe for the Staff of Herding drop of Izual in Act 4.
Step 2 - Build the Staff:
* Using ALL the items found above, the recipe for the Staff of Herding, and 50,000 gold. This is built at the Blacksmith.
Step 3 - Quest:
* Take the staff to the open red glowing crevasse on Old Tristram Road in Act 1, use the staff and accept the quest.
Sanzano Jun 8th 2012, ID#17194