The Elder Scrolls 3: Morrowind is almost 18-years-old. That also happens to be how long modders have been working to expand the game’s already enormous world. The modders working on Tamriel Rebuilt have been slowly adding pieces to Morrowind and this week they released one of their biggest additions ever.

The original version of Elder Scrolls 3 was supposed to include the entire Morrowind region, not just the central island of Vvardenfell that comprised the final game. Developers at Bethesda eventually slimmed down their vision before release. Ever since the scope of the original game changed, the modders at Tamriel Rebuilt have been working to put the piece back together and rebuild the missing mainland in the game.

The project’s newest release is centered around the region of Aanthirin, located south of Vvardenfell. The region features a massive river and several new cities and settlements. This latest version of the mod also includes more than 60 new quests designed to be done in this area — including at least one large, multi-threaded adventure — so that you’ll have plenty to do once you reach Aanthirin.

With this latest patch, dubbed 19.12, the map is just a little closer to completion. However there’s still plenty left to add. According to the announcement post for the Aanthirin patch, the next project for the Tamriel Rebuilt team will be Thirr Valley, a region of the Nasis District. Apparently most of the exteriors for this area are completed and it’s around two thirds of the way done, so it’s possible that could be heading to the new and improved Morrowind sometime next summer.