I started from Dayiurejo and returned to Prigen/Tretes. The way up from Prigen is a stone prepared road for the transport of the sulfur, partially not easy to walk but you will probably be faster than walking on the trail. You will not see so much of the landscape around. If you want to see more of the beautiful nature, you should start from Dayurejo, however from there the way sometimes is a bit more difficult to find. I just mention this point as I decided to walk down to Prigen via the road, as it was dark already and it rained heavily.