My brother and I remember a book from our childhood (the 90’s) which was picture-book sized but felt more like a preteen/YA type novel. It was an adventure / mystery story, and we both only remember images from the book. We are hoping that you can help us out.

We remember:- a picture of people on a rope bridge being attacked by arrows (? we think it was arrows?)- a picture of a girl sticking her arm in a fire while onlookers watch (it was some sort of test)- picture of an idol with green skin and a horn through its nose- picture of two people being ties to a rock with evil looking horsemen appearing from a sandy background- picture of a seaplane landing on water- [potentially someone (resembling an Aztec or Mayan leader?) taking the heart of another person– we are not sure if this is from the same book, so this is the only image we cannot commit to]