you take the gunpowder {from china} and take it to the rocks and the flame will light it then BOOM! the cave will open...so good luck!
on time tangled island [vikings]
It is near the left on the end but first you have to blow open the rock and the cave and get past the mine carts.
Mythology Island.
no there is no map for the cave I think
In the stone wall you get the you get the gun power to blow up rocks to get in the cave to get the tem inside and you need to beat a memory game to get the amulet for the vickings
The newest clue on the Poptropica blog shows a mysterious cave.
on top of the big shark statue in shark tooth island in ancient ruins
Vikings (831 AD)
Use the gunpowder from the Chinese periode.
It is hidden in the big bush.
in the cave in the vikings island but you need to find first the gunpowder to be able to enter the cave
if you are talking about blue nile falll cave it's in the right top