I always heard it was Malabar Farm. Maybe that was just a trip, but they were there.
That might be true but they were married in Kingman Az. Here are the news clippings on this site..
http://laughlinbuzz.blogspot.com/2017/01/clark-gable-carole-lombard-in-oatman-az.html
I met an elderly lady who grew up in Oatman and knew them both. She was a kid at the time.
Said that they would come to Oatman often and stay at the hotel. He would park the car outside, take the bags upstairs and then Carol would head down and join the ladies of the town in needle point and gossip and Clark would go to the local saloon and sit down with the local miners and play poker and smoke cigars.
Just like the common folk. They enjoyed it and never so much as looked down their noses at anybody.
I have seen home movies of them stuck with their car out in the desert around this area.