Every party had to come to an end.
After the 20th hour, the boundary that kept the door between dimensions open began to show signs of instability.
That spooked a lot of people. The scientists that had been studying it all day could not predict when the portal will actually close because they never studied anything like it in the past.
While there were plenty of people that were willing to take Ketis at her words, there were other people that did not want to suffer the consequences in case she was wrong.
People started to make their way out, whether they were willing or not. This was the first time that they entered a dimension that was filled with superdimensional materials.
Sure, the vast majority of it consisted of low-grade dirt that could only be used to build stronger fortifications, but that already represented quite a lot of value!