Cat Nap part 2

We are cleaning the house and Wookie is no where to be found. I am not nervous because this cat is a naper and I know he is in the house some where. I go to get clean towels for downstairs. I open the linen closet door.... I go to pull a towel and find this.....I have no idea how he got in there. I have no idea how he jumped up to that shelf. The closet is so narrow and when the door is shut it is almost against the towels. Only Wookie would find a way.