if you are talking about diamond mines then hit the green button that makes the carts go up, push the barrel with the little flame until it hits the rocks then turn on the green button again
u jump the rocks
You jump over them.
In the Diamond Mine, there are explosives at the left. (see related question)
Help the man and he will tell you about a secretcave which is on one of the rocks behind a plant.
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.
yes when you pour the pop rocks into the soda the carbine dioxide builds up and the air makes it blow up
go in the mine shaft and blow up that wall then you will see a rock with a bunch of stones in it find the 1 with the nabooti tribe symbol on it
you have to blow them up with bombs
just go to the wall of china, and get the gunpowder and hooray, now you can go blow the rocks
The Blue Jewel is inside the tomb beneath the Sphinx at Giza. (see the related question)
Nabooti is an island on Poptropica.
In the Diamond Mine on Nabooti Island, you have to DUCK DOWN into the cart when the ceiling is low, and JUMP over the rocks that stick up. You should jump no later than the time you see the "jump" sign.