newest entry of Threat of Peace -- the webcomic prequel to Star Wars: The Old Republic -- it seems like Jedi and Sith will fight just about anywhere. They'll even make battle under Dantooine, especially if there's some degree of revenge involved in the fight. To be fair, Sith Lords Baras and Master Dar'Nala aren't simply fighting in a cave, they're fighting in ancient crystal caves that make for a much more spectacular setting. Of course, none of this would even be happening if the Jedi didn't blame the Sith for upsetting the peace treaty.
Ah, Jedi, always blaming the Sith for their problems. Well, at least it makes for great showdowns beneath Dantooine! If not for that, well... we're not really sure what these comics would be about. Jedi picnics?