Maps.Refuges.Info is a mapnik map style using Openstreetmap data for moutain activities and specifically Alpine hut and sleeping places in the mountains.
More information at https://wiki.openstreetmap.org/wiki/Hiking/mri
Missing external files can be found :
== geotiff files for relief, contours pg dump and Water Areas shapefiles ==
This still uses pre-compiled or data not from OpenstreetMap You can get the one I'm using here : https://maps.refuges.info/download
But of course you can build your own colored or not & shaded or not relief
== water polygons ==
Source & more accurate polygons are here : https://osmdata.openstreetmap.de/data/water-polygons.html