popsu-d7/sites/all/modules/geophp/geoPHP/tests/input/opposite.gpx

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<gpx xmlns="http://www.topografix.com/GPX/1/1" creator="" version="1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">
 <trk>
  <name>Mons and its opposite</name>
  <trkseg>
   <trkpt lat="50.45409" lon="3.95626"></trkpt>
   <trkpt lat="-50.45409" lon="-176.04374"></trkpt>
  </trkseg>
 </trk>
</gpx>