You are on the road to Akrotiri Megalochori, halfway, next to some wineries that are called Boutary Winery. When you get to the wineries follow the stone path until you find some stairs very rudimentary facts caldera itself. I have to warn you that the descent is very steep because those steps go down to the sea. When you get to the first church, and there are no steps and have to follow a very narrow path through the undergrowth, sometimes no. When we went, it had rained for several days, and the water had washed the road downhill, so we had to go looking for it ourselves. It lasts about an hour and a half of decline.