Board Thread:General Discussion/@comment-25014849-20140627232456/@comment-25014849-20140707224155

there is no perfect world. at that time i didn't finish the house of hades yet so i put the mark of athena and it's the desert and it has air pressure because percy can heal himself over and over again and jason could just fly up in the sky to kick back and relax. there is water underground you know.