Secret Cow Level

How to get into the Secret Cow Level in Diablo 2 LoD with your udder still intact.

1) Get and keep Wirt's Leg. This is found in the upper left corner of Tristam.
2) Defeat Baal on the difficulty you want to make the portal for.
3) Go back to the Rogue Encampment
4) Insert a Wirt's Leg and a Tome of Town Portals into the Horadric Cube and Transmute.
5) Enter Portal and get mooooooving.

The cows can be surprisingly difficult to kill with melee characters, so be careful. Paladins and Sorceresses in your party can be very helpful.

Not a great spot to zoom up the exprience (cows are not worth a lot, however there are quite a few of them), the chances of finding good runes or gems or magic equipment is much better than average. Also, most of the stashes and chests are good here as well, so don't skip checking those out.

DO NOT KILL THE COW KING

WARNING: If you want to make the portal again, DO NOT KILL THE COW KING. If the Cow King is killed in a game where you made the portal, you WILL NOT be able to make the portal for that difficulty anymore.