Ruach Planitia
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Ruach Planitia is a roughly circular flat plain and probable cryolava lake on Neptune's moon Triton. It is located in Triton's northern hemisphere within Monad Regio and directly borders the cryovolca
Voyager 2 image of Ruach Planitia. The crater Amarum is located to the lower right, and Dilolo Patera occupies much of Ruach Planitia's center. Parts of Tuonela Planitia can be seen at left
Tuonela Planitia
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Tuonela Planitia is an elongated plain and probable cryolava lake on Neptune's moon Triton. Located in Triton's northern hemisphere within Monad Regio, it overlies part of Triton's unusual cantaloupe
Ruach Planitia
…Triton. It is located in Triton's northern hemisphere within Monad Regio and directly borders the cryovolcanic plains of Cipango Planum to the east and Tuonela Planitia to the west. Ruach Planitia, along with the other three walled plains of Triton, is one of the youngest and flattest features observed on the moon…
Voyager 2 image of Tuonela Planitia across the upper half, with Ruach Planitia below. Several "islands" occupy Tuonela Planitia's interior, with Kasu Patera at the upper right