Allen, who had arrived in the Barkaley region, had to wait until nightfall to enter the dungeon because people who have not registered with the dungeon explorer guild are prohibited from entering the dungeon.
Once night fell, Allen sneaked into the dungeon alone.
When he got inside, he realized that the place was peaceful. He didn't sense any monsters; in some places, there were wooden signposts. This dungeon's system was "change" or "re-structured" at a certain time; the dungeon would re-structure its path so that many people would get lost, and that's why those pieces of wood were put everywhere. Once Allen tried to get lost, he could return to the main path because of those wooden clues.
After walking around looking at everything, he realized that the dungeon hadn't changed much. Even the place where the goblins wanted to rape Lavinia was still there, although the position of the room was different.
