Rockopolis

Rockopolis - This location is not a major landmark nor a random location and will not appear on your map. It is located due west of Smith Casey's Garage, due north of Girdershade and South East of the Yao Guai Tunnels. The entrance is a boulder that can be interacted with like any other door or entrance. Facing the boulder, there is one dead tree on the right, two on the left. And as the attached pictures show, there is a string of flags above the boulder.

In The Adventures of Herbert Daring Dashwood on GNR, Rockopolis is supposed to be a hidden village. The inhabitants would only allow outsiders in if they presented with a secret knock. Herbert lead Penelope Chase, the Black Widow to Rockopolis. It is not known if the segment is fact or fiction.

Bobblehead-Unarmed Location - It is inside Rockopolis, towards the right, past the torch. You'll find it lying next to the dead body of Argyle.

TS- (Trap space) left hand wall on entry can be scaled, small area looks like tunnel once in there cant get out. Nothing in there. (It is possible to get out of this area with two well aimed jumps)