This is what the wt states:
Light the fire stands and note which one stays lit longest or shortest time.
Run (shift + arrow) to light the fire stands. I just kept running and lighting the fire stands until smoke filled the cavern and the gate rose.
This is what Pollo Diablo states:
For me the best route was to light the second from the left first, then the rightmost, then the third from the left and finally the leftmost. But you may find another route easier, for instance 2,3,1,4. When the gate opens, pick up the missing block and return to the white stone ledge.