Mysterious old maze

I met the mysterious old man before today on many occasions. When you expect it least, he uses to pop up and greet me. After a few words he would either present a small tidbit or leave a strange kind of rotating box. Today however, as I was about to persuade a druid to give me some herb, he said "you will do" and before I could blink I found myself in a strange surroundings.

There were walls and there were not; the bricks seemed to hang in mid air. Together they made up walls, corridors, a maze! The corridors were linked with iron gates. A voice reminding the time left to get to the center of the maze hung in the air. Also in some corridors stood chests, I assume they are there to try and keep the innocents from their goal in the centre. When I got there and touched the rotating stone I found myself back where I started and got smacked by the druid.

I found I had some coins and arrows in my backpack that were not there before...