{
  "title": "An Active Gully in Matara Crater",
  "authors": "HiRISE",
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    "excerpt": "Gullies in the sand dunes of Matara Crater are very active."
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        "text": "HiPOD: 14 APRIL 2020"
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        "text": "An Active Gully in Matara Crater"
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        "text": "<p><br />Gullies in the sand dunes of Matara Crater are very active. One large gully in particular has had major changes in every Martian winter since HiRISE began monitoring, triggered by the seasonal dry ice frost that accumulates each year.<br /></p>"
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        "text": "<p>This time there was an especially large change, depositing a huge mass of sand. The sand divided into many small toes near its end, or perhaps many individual flows descended near the same spot. Additionally, a long sinuous ridge of sand was deposited. This could be a &ldquo;levee&rdquo; that formed along one side of a flow, but there is not much sand past the end of the ridge, so it might also be the main body of a flow.<br /></p>"
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        "text": "<p>ID: <a href='https://uahirise.org/ESP_063969_1300'>ESP_063969_1300</a><br />date: 19 March 2020<br />altitude: 251 km<br /><br />NASA/JPL/UArizona</a></p>"
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        "text": "Black and white images are less than 5 km across; enhanced color is less than 1 km. For images with scalebars, see the above ID link to our website.<br />"
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