The mine cart ride is the final challenge at the Diamond Mine on Nabooti Island. The only thing you need to do is duck down when you are close to the ceiling, and jump up to avoid the boards immediately after that (repeats three times). (see related question)
On the mine carts you duck jump duck jump duck jump then stay
Dodge the mine carts, go down the elevator, blast the rock and the wall, ride the mine cart, and get the White Jewel from the diamond pile. (see related question)
All you need to do in the Diamond Mine cart is to duck down into the cart when the ceiling gets close, then jump over the wooden barriers (it says "Jump" a little late).
In the final area of the Diamond Mine, DUCK DOWN when the mine cart gets close to the ceiling, and JUMP when there is a rock in your way (there are three of each). You should jump *before* you reach the sign that says Jump.
On the mine car rolling through the Diamond Mines, duck down when you get close to the roof, and jump over any rock that sticks up (there's a warning sign).
You can always backtrack out of the diamond mine. When you reach the end of the cart ride, use the magnifier to choose the correct white jewel from the bunch of diamonds. (It has a triangular mark on it.) Click on the hole in the roof to leave.
click on the seat of the plane and it should say travel good luck!!
Ride the mine cart to the end. When it gets close to the ceiling, duck down. When it gets to each barricade, jump over. (You will do this three times and you can try as many times as needed.)
The diamond mine contains the white jewel.Before going to the Mines, you will need to complete the Safari, where you will get a hardhat. You will enter through the electric fence, dodge the mine carts, blast the mine wall with explosives, and ride the cart to the end of the mine. There, you will find the jewel hidden in a pile of diamonds.(Full solution : see the related question)
Get a hardhat from the Safari and reset the electric fence to get inside. Jump the mine carts to reach the elevator, then blow up the wall with explosives. Ride the mine cart through the mine, ducking or jumping to avoid the beams. At the pile of diamonds, use the magnifier to find the White Jewel. (see related question)
you must finish the cart ride or go backwards to the end of the cave and press the green button