If a waterway is tagged such as waterway=stream or waterway=river and then tagged with tunnel=culvert, the rendering does not reflect a culvert (for example where a stream is routed under a road or an area but not necessarily a bridge)
To use the example from the default Mapnik rendering on OSM, a section of waterway tagged with tunnel=culvert is rendered as a pale blue colour with a blue dashed outline
If a waterway is tagged such as waterway=stream or waterway=river and then tagged with tunnel=culvert, the rendering does not reflect a culvert (for example where a stream is routed under a road or an area but not necessarily a bridge)
To use the example from the default Mapnik rendering on OSM, a section of waterway tagged with tunnel=culvert is rendered as a pale blue colour with a blue dashed outline
Example: http://c.tile.openstreetmap.org/19/249429/166568.png http://www.openstreetmap.org/#map=19/54.70854/-8.73046
Might this be possible in the Humanitarian render?