This file is indexed.

/usr/share/xscreensaver/config/mountain.xml is in xscreensaver-data-extra 5.15-2ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="ISO-8859-1"?>

<screensaver name="mountain" _label="Mountain">

  <command arg="-root"/>

  <number id="delay" type="slider" arg="-delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="20000"
          convert="invert"/>

  <number id="count" type="slider" arg="-count %"
          _label="Peaks" _low-label="One" _high-label="Lots"
          low="1" high="100" default="30"/>

  <number id="ncolors" type="slider" arg="-ncolors %"
            _label="Number of colors" _low-label="Two" _high-label="Many"
            low="1" high="255" default="64"/>

  <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>

  <_description>
Generates random 3D plots that look vaguely mountainous.

Written by Pascal Pensa; 1997.
  </_description>
</screensaver>