I have never been in any campaign that has been running longer than my World of Tiglath campaign. The dates on the world maps go back to 1998. I created the video of the spinning globe in 2001. Some of the places and dungeons are much older. For example, the second dungeon I created was my Big Dungeon around 1975. My Big Dungeon has several entrances. In my current campaign, the party found an entrance through the palace of Th' Shoiz Shai Zhai.