{ "title": "HiPOD", "metadata": { "thumbnailURL": "bundle://header.jpg", "excerpt": "Nirgal Vallis is a long river channel, about 610 kilometers long and may have contributed to the flood that breached Holden Crater and created a lake there." }, "version": "1.5", "identifier": "ESP_019810_1515", "language": "en", "layout": { "columns": 10, "width": 1024, "margin": 85, "gutter": 20 }, "documentStyle": { "backgroundColor": "#faf7f2" }, "components": [ { "role": "heading1", "layout": "heading1Layout", "text": "HiPOD: TUESDAY, 26 NOVEMBER 2019" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#8c2028" } }, { "role": "title", "layout": "halfMarginBelowLayout", "text": "Gullies and Bedrock in Nirgal Vallis" }, { "role": "photo", "layout": "fullBleedLayout", "caption": "A portion of the full observation, showing gullies and bedrock, less than 5 km across. (NASA/JPL/University of Arizona)", "URL": "bundle://ESP_019810_1515-main-11-26.jpg" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "


Nirgal Vallis is a long river channel, named for the Babylonian word for “Mars”, and is about 610 kilometers in length. It is highly likely that water flowed here in the ancient past, and contributed to a great flood that went through the rim of Holden Crater and helped form a lake there. Nirgal is one of the longest valley networks on Mars.

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These images show a section of the valley, and our primary interest is viewing the gullies and bedrock in better detail than appear in images acquired by the Mars Orbiter Camera.

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ID: ESP_019810_1515
date: 10 October 2010
altitude: 256 km

NASA/JPL/University of Arizona

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