The cave is the location in which Gobber becomes trapped after a landslide. However, once you glide over from the platforms to him, you are told it was simply a test for you and your dragon, in order to monitor your progress during the gliding stage. 
Wilderness the cav

Starfall and Risuki at the cave.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.