If the root with zoom increases, they become suddenly pipes that are bent at an angle of ninety degrees. 
Credit: Mars Reconnaissance Orbiter MRO HiRISE/PSP_005684_1890
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If the root with zoom increases, they become suddenly pipes that are bent at an angle of ninety degrees. 
Credit: Mars Reconnaissance Orbiter MRO HiRISE/PSP_005684_1890
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