It's pretty easy to think that we've managed to discover everything there is to discover on our little space rock. After all, we're surrounded by a swarm of satellites that have photographed every inch of it in such exquisite detail that you can peer in through people's living room windows. Despite this, the Earth is a big place, and there are still some parts of it that we have no idea about (or even had any idea they existed until very recently). Most of these isolated places remain so isolated because the conditions are not super-duper for the survival of soft, squishy humans. The bottom of the ocean, the middle of the jungle, the deepest caves - all not exactly cosy places to live. That said, there are some "unexplored" parts of the world that have plenty of people in them, thank you very much, it's just that scientists haven't been able to study them closely, either through reluctance to disturb the locals, or the local's reluctance to be disturbed.
