@DavidBrown I've seen them in India (Large-eared Pika), China (Black-lipped Pika, Moupin PIka, Gansu Pika), and Mongolia (Pallas' Pika). All of them in mountains. I tend not to think of Mongolia as "mountains" because the Ikh Nart Nature Reserve where I saw Pallas' Pika is more undulating than mountainous, but it is at 1200m in altitude.