Making a den can be as simple or fantastic as you like!!
The simplest version can be just created under a large tree or in a bush with a space inside.
A rope tied between two trees with a sheet draped over each side and weighed down each side also creates a simple tent like den.
A more complex design can be created using freshly cut lengths of hazel gently manipulated and curved over to form an arch shape.
Then by repeating this a bender or dome type camp can be created.