Hints on Use
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Walk Track (Trace de la balade)
GPS track on IGN map (map, relief ou satellite) or Open Street Maps (landscape, cycle, outdoors), selected using the "layers" icon top right.
There are buttons at the bottom of the page for: displaying a UTM grid (right-hand button); displaying waypoints for start/end points; and for displaying photos (left-hand button, only displayed if photos available). For the latter, click on the camera icons to display a photo taken at the corresponding point, click on the image for an anlarged photo.
Elevation and coordinates of the mouse point (bottom of page in the middle).
Click on the markers (start/end points) or on the track for details concerning the track.

Walk Profile and satistics (Profile et statistiques de la balade)
Distance, max and min altitudes, accumulated climb; time of start and end of walk.
There are often significant differences between alttitudes, and changes of altitude, as measured by a GPS and as calculated by cartography software. The latter is more accurate, since the GPS system does not have a high degeree of precision for the vertical axis.

gpx files:
These files can be downloaded either to a GPS device or for display in cartography software

kml files:
These can be opened with Google Earth, to provide a 3D image similar to the above, using the Google Earth application, which has more possibilities than the 3D vewer.