Okay, I didn't have either of my pyramids when I entered this area, but I found something called an "Ancient Pyramid" laying around. Is this the same thing as the other two? If so, where is the other? Since I found this thing lying around, I'm assuming it isn't a bug for the one pyramid that was in my inventory to disappear.

Never mind. I found the other pyramid under a one of the many, many, many piles of gold in my inventory. hahaha.

They are the same as the original. They are placed there for those who don't have the teleport stones in their inventory when the ritual is performed.

They work exactly the same . . . only the name has changed . . . =)