If you ever stay on La Gomera, surely you also will visit the famous Nationalpark Garajonay, el Parque Nacional de Garajonay. The name comes from the highest mountain of La Gomera: Garajonay, with 1487 m the highest point of this Island.
Here you can find the wood, El Bosque del Cedro ….. which means cedar…. even if there are no cedars.
There are lots of misty days …. but that’s exactly the thing what makes the nationalpark so special. Here it’s like beeing in the middle of a fairyland. 
There is also a nice picnic-area inside the nationalpark. Laguna Grande… but don’t go there on Sunday, because on Sunday it is very busy there, as it is very popular by the native… and so lots of familys with lots of children, Grandmother and Aunts and Uncles… and once more children…… are there. So if you have the choice, it’s better going to Laguna Grande for a picnic during the week. If you don’t like to have a picnic, there ist also a restaurant here.
Some rules for visiting the nationalpark Garajonay:
-It’s not allowed to take flowers with you
-It’s not allowed to sleep inside the park
-it’s not allowed to make fire outside of the picnic-areas
-And of course, take all the litter with you
Of course, I guess this things everyone knows already….