Kate Gosselin’s much-hyped Alaskan camping trip with Sarah Palin turned into a nightmare when the mega-mom suffered a diva-like meltdown – and stormed off despite Sarah’s pleas.

The reality show star stayed at the campsite for just two hours of the planned two-day adventure – and left amid an avalanche of insults, complaints and tears, The ENQUIRER learned exclusively.

“It was a nightmare,” revealed an insider.