In the South-West of Beijing lies a limestone area resulting in a magnificent karst landscape, North and South of the Baojin Shankou Canyon. There was a bit of haze today, but it clear weather it must be even more beautiful. On the South there are gardens and small farms. In the past all over here food was grown. Now there are just remains left, but they are still active.
You may download here the GPS track in gpx- and tcx-format. We started a bit late today and did not explore the area to the fullest. Given the geology, there must be caves around. We met a teenager with a torch (and an acrobatic throwing knife, which impressed me a lot) who was heading for one of them. But we returned to avoid sunset before reaching clear trails again. To reach the starting point you will have to cross a bit of "Tourism with Chinese characteristics". But no worries, they will all disappear into some sort of park worshipping with their mobile phone cameras some sort of plastic Confucius. This absorbs them all, really.
Here comes position and GPS plot: