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- Lethe Vallis is a valley in the Elysium Planitia on Mars, located at 4° North and 206.5° West. It is 225 km long and is named after river Lethe in Katmai National Monument, Alaska, USA. Lethe Vallis originates at the SE margin of the West Elysium Basin (Cerberus Palus). West Elysium Basin probably contained a lake that was 500 km across and received water from Athabasca Vallis. It was probably formed in just days or weeks and had a discharge about like the Mississippi. Some have suggested it was formed from lava flows, but lava would not be able to flow over such a low gradient for so long a distance. (en)
- La Lethe Vallis è una struttura geologica della superficie di Marte. (it)
- Lethe Vallis é um vale no quadrângulo de Elysium em Marte, localizado a 4° N e 206.5° W. Possui 225 km de extensão e recebeu o nome de um rio no Parque Nacional e Reserva de Katmai no Alaska, Estados Unidos. (pt)
- 萊瑟谷（Lethe Vallis）是位於火星埃律西昂区的一處谷地，中心座標4° North, 206.5° W。該谷地長225公里，以美國阿拉斯加州卡特邁國家公園和自然保護區萬煙谷內的莱瑟河命名。 (zh)
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- Lethe Vallis, as seen by HiRISE. Flow was from southwest to northeast. Wider part of Lethe Vallis had less erosive power, so mesas are left behind from pre-existing material. Scale bar is 500 meters long. (en)
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- Lethe Vallis is a valley in the Elysium Planitia on Mars, located at 4° North and 206.5° West. It is 225 km long and is named after river Lethe in Katmai National Monument, Alaska, USA. Lethe Vallis originates at the SE margin of the West Elysium Basin (Cerberus Palus). West Elysium Basin probably contained a lake that was 500 km across and received water from Athabasca Vallis. It was probably formed in just days or weeks and had a discharge about like the Mississippi. Some have suggested it was formed from lava flows, but lava would not be able to flow over such a low gradient for so long a distance. (en)
- La Lethe Vallis è una struttura geologica della superficie di Marte. (it)
- Lethe Vallis é um vale no quadrângulo de Elysium em Marte, localizado a 4° N e 206.5° W. Possui 225 km de extensão e recebeu o nome de um rio no Parque Nacional e Reserva de Katmai no Alaska, Estados Unidos. (pt)
- 萊瑟谷（Lethe Vallis）是位於火星埃律西昂区的一處谷地，中心座標4° North, 206.5° W。該谷地長225公里，以美國阿拉斯加州卡特邁國家公園和自然保護區萬煙谷內的莱瑟河命名。 (zh)
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- Lethe Vallis (it)
- Lethe Vallis (en)
- Lethe Vallis (pt)
- 萊瑟谷 (zh)
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