HiRISE: Narrow troughs

ESP_055058_1550Narrow troughs. What exactly are the nature of these thin, narrow troughs? They might may be part of a system of dikes that came from the same magma source that fed the whole area in Thaumasia Planum, just south of Valles Marineris.

HiRISE Picture of the Day archive. [More at links]

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