To blast open the rocks at the cave in 831 AD (Vikings), there is a barrel of gunpowder at the Great Wall of China (1593 AD). It is at the lower right side. When you take it to the cave, click on the rocks to explode the barrel from your items.
Go on www.youtube.com, search in time tangled walkthrough. It might help.
you click the time watch and click the guy in the middle of the watch(across lab and look for it on that island and then take it to the viking island and go by the cave.
To get the torch from time tangled island you must go to the viking and blast open the cave and you will receive a torch you must make to the vase before the torch goes out.
In the land of the Vikings, go right and up the hill, that's where the cave is. You need the Gunpowder to explode the rocks so you can enter the cave.
There are no more secret items on time tangled island, but if you are talking about winning the whole island, go onto youtube and type 'poptopica time tangled island.'
In time tangled island you go to your click on your gold warping thing on your bottom left of your screen, then you click on the second to the right person with orange hair and an orange. Keep going to your right until you see rocks you can jump on.
Complete all the challenges on Time Tangled Island. Complete all the challenges on Time Tangled Island.
you leave and go to a different island
In Time Tangled island, go to Pendulum's Lab. Inside he will tell you what to do. To turn on the machine, go to the bottom of the lab and push the plug.
The "bomb" is a barrel of gunpowder at the Great Wall of China (1593 AD), near the right side. When you have it, go to the cave in the Vikings time (831 AD) and click on the rocks in front of the cave.
The Vikings cave you have to go to the Chinese place and follow the trail of black powder to the barrel of gunpowder then go back to the cave and click the stone cave and there you go.
you go into the cave in the time of the Vikings and blow up the rocks with the gunpowder in the Chinese time you take a little flame next to the cave go in and at the bottom of the cave is the jar