Hi. I don't think a human or any other solid object could pass through even a non-active sunspot without being vaporized! Sun spots are the coolest parts of the sun, but they are still over 3000 deg C - which is very, very hot. No solid or liquid could exist at such a temerpature. They are the only part of the Sun where you can have water in the form of steam. Everywhere else is too hot.

Terry