The story:
A story-telling session in the Skull Cave during which the Phantom relates the events surrounding Rip Van Winkle and his 20 year sleep becomes even more interesting when Old Mozz proclaims that the 12th Phantom had a similar experience when visiting a place called 'Erehwon'.

Putting down Mozz' story down as a local version of Rip Van Winkle, the Phantom is nevertheless sufficiently curious to command a Jungle Patrol helicopter to the area that has 'a crater covered in mist' and starts the descent...