My endeavour in the search for treasure didn't bear any fruits even after the two-hour mark. All the previous optimistic and fun thoughts had vanished.
Though there was no need for any treasures, being empty-handed even after such a long time in an event specifically called a 'treasure hunt' was still quite depressing. And thus, at that moment, I would have been satisfied with any minor or trash-like treasure, too.
Still, the situation was not all bad, as during my thorough search through every nook and cranny of the dungeon, I had incidentally found a secret passage going deeper into the dungeon.
There was still the option of continuing with the same floor, but I was already fed up with this level of the dungeon and decided to go deeper through the secret passage.
And it was a correct decision, as after climbing down the staircase in the secret passage, I found myself standing in a burial ground.