Help solving this riddle

I need some help please.

Summit Rock Hunters, it's time for rock too, so many are looking, so how about u? Some will search little for this Rock, others around-the-clock. Old clues, new clues, some might bend, try to remember, or just ask a friend. Kiddos please, can you help the older, some think they're getting hot, but keep getting COLDER. The shirt on this journey might make you frown, so why not turn it upside down.