It is a heritage cultivar that has adapted to this one range over generations, and it holds Geographical Indication protection, which legally ties the name to this origin.
The fruit is smaller and denser than commercial varieties, with a firmer texture and a distinctly higher sugar concentration. Growers attribute it to the altitude, the specific soil on these slopes, and the temperature range the plateau holds.
What makes the visit worthwhile is the explanation of why it fails elsewhere. Plant the same sucker on the plains and you get a different, inferior fruit. That relationship between a cultivar and a place is unusually clear here, and the grower can show you rather than just tell you.
The season peaks between roughly December and March, though fruit is generally available across the year.