The great wall of China is located on the Time Tangled Island.
Hope this helps.
Look under and find the treasure
To the far right in The Great Wall of China (1593 AD)
Go clock wise on the time watch and click on the 6th picture and that is the place where "The Great Wall Of China" is at.
The barrel of explosives on time tangled is on the left of the Great Wall of China.
The great wall of China is not near Hong Kong. It is located on main land China, which Hong Kong is an island.
The great wall is located in China.
You can't
the gunpowder in Time Travel island on Poptropica can be found on the far right side of the great wall of china area. It is in a giant barrel.
China
There is no Snoopy Island on Poptropica. Snoopy and "Peanuts" characters appear on Great Pumpkin Island. (see related question)
On the Poptropica blog, I think they say the next island is Pop Island ***ALOS ANSWER!!*** There is no pop island as you can plainly see so
you have to get the dynomite at the great wall of china.