There are 2 mine carts.
But when you progress through the game...
*** Spoiler - click to reveal ***You have to destroy a piece of the track and it's impossible to use that mine cart. If you have destroyed the track use the location below for the 2nd cart.
- Go to the room / area marked on the map:
- Get into the cart and press
to ride the cart to the other side
- Rinse and Repeat