# BarLengend for GeoStyling["ReliefMap"]

I would like to add a BarLegend for the elevation values used by the GeoBackground -> GeoStyling["ReliefMap"] option of GeoGraphics.

Here's my code:

GeoGraphics[{GeoMarker[{5.52, -73.08}]  }, GeoBackground ->  GeoStyling["ReliefMap", ColorFunction -> ColorData["LightTerrain"]],  GeoRange -> 8000 ]


I would like to produce the BarLegend giving the scale of the terrain elevations used in the background of my GeoGraphics.

Thanks a lot.

minmax = QuantityMagnitude @ MinMax @