"Digging a hole to China" is possible if you start in Argentina. One of the most intriguing fun facts about Argentina is that you could dig a hole to China from there. As a feat usually done by cartoon or comic book characters, traveling to China underground is possible in theory, but not so much in practice. Underground conditions such as heat, pressure, and lack of oxygen are just one of the few realities that keep this cartoonish concept just that – a concept for cartoons.