This was a tough hike - I would not try it without a local guide. It starts out on the road (you could drive the first couple of km) at the nice guesthouse - basic but clean and comfortable (see matebianguesthouse.blogspot.com). Then rises up a track, over some loose skree, then rises more steeply through thin forest, involves some scrambling over rocks. The last time I was up here, it was a lovely sunny day. This time we had strong winds, rain and dense fog. It was very cold. The 'church' at the top has been damaged by livestock and is now in poor condition but offers some shelter. We then continued down the east side to Ossohuna following the track I had uploaded from GerardNL. It was wet and slippery and hard going. But if you are fit and well prepared this is a great hike. We had the cars drive around from Quelacai to Baguia. Not cars can no longer make it up as far as the trail head that GerardNL describes - it is another 45 minute walk (well it takes that long in the dark as we did!). Really great to climb up the west side and down the east. Be well prepared though!