Huandoy or Tullparaju is a mountain located inside Huascarán National Park in Ancash, Peru. It is the second-tallest peak of the Cordillera Blanca section of the Andes, after Huascarán. These two peaks are rather nearby, separated only by the Llanganuco glacial valley at 3,846 m asl. It is a snow-capped mountain with four peaks arranged in the form of a fireplace, the tallest of which is 6,395 m. The four peaks are each over 6,000 m, and are: Huandoy Huandoy-West Huandoy-South Huandoy-East It was first climbed in 1932 by a German party.