Khuzdul: Gundabad ‘Mount Gundabad’ (as also known in Sindarin)
English: Mount Gundabad
German: Berg Gundabad ‘Mount Gundabad’
Gundabad / Mount Gundabad — Tolkien Gateway
Gundabad — The Thain's Book
Gundabad / Mount Gundabad, Capital of the northern Goblins. — Encyclopedia Arda