The Area between Spindleruv Mlyn and Labska Bouda
This map will give you an impression of the area.
When you go up north from Spindleruv Mlyn and follow the path marked by a grreen line leading NNW you will come to Martinova Bouda.
As you can see, many trails are documented on this map.
(When you want to go hiking there, I strongly recommend, that you take a good map, including lines of altitude, with you.) Great area for hiking and tour skiing!