We snuck around the riverbed once we saw the blue tent at the bottom (where you might have to pay) and got by with no problems.
*'''Jan 2020 GPT32 South 7days / Felix'''
Coyhaique to Villa Freí: There is a bus from the bus terminal in Coyhaique to Villa Freí. From there it was a hot dusty road.
Accessing the park : You have to pass through 4 private properties to enter the first sector of the park. We met some people. Had short friendly chats, but no problems with access. Just before you enter the park (where there are two trail options) there is easy access to the river via a cow trail. However water in general was no issue and I didn't carry water for the entire 7 days through the park.
The camp site used to be an official campsite before the sector was closed due to access problems. The dunny is in great shape.
Through the first sector : The trail is in great shape until after the mirador. You then cut upwards into the alpine which is also easy walking. After passing through a saddle, you contour around above the treeline. This is the most difficult part of the section. Quite a bit of step scree traversing. Not for everyone. Once you drop into the valley waking is again easier. There are some occasional cairns that become more and more frequent as you drop into the other valley. As you contour left an intermittent trail is evident. When you enter the lenga forest (-45.97321, -72.10278) there is a great trail down that turns into a road here : (-45.97886, -72.10358) (Jan: maybe you want to update the track files to reflect this?) Then is road walking to join the popular walk.
Popular sector of Cerró Castillo : There are some side trips not included in the track files. They're on the map you get. Note that the old Bosque site (-46.06197, -72.16016) and La Tetera (-46.07200, -72.18390) are now closed. You can not camp there. For most people this means camping at the new el Bosque : (-46.06418, -72.16964)(Jan : maybe you want to update the track files?) Get to Laguna Cerró Castillo before 12 to beat the walkers heading up for the day. But this shouldn't be an issue as you need to cross the pass early : an important thing we would have liked to know is that the pass (-46.08030, -72.21103) can be closed in the afternoon due to strong winds. There is literally a ranger there that can turn people around. Not much water over the pass either. And the poza cerca mirador doesn't look welcoming. Carry water here. In the next valley there were more rangers and we saw some people get checked for permits. It's a shame this park is now being comercialalised :(
Getting back to Coyhaique : Not much traffic. The last bus heads back at 6pm