Support for tunnels

[RealKaiserschmarren]

A ski tunnel should cut through a mountain, not go over a peak and then go back down again.
see: https://openskimap.org/?obj=cebf218846ca7cb447137cfeb3e08a1f87196aa6#14.4/46.92804/10.93433 (Skitunnel Söden, Austria)

[russellporter]

Thanks for your feedback. Indeed OpenSkiMap has no knowledge of tunnels at the moment. I can imagine, ideally we'd also:

• render the piste as a tunnel on the map
• indicate the tunnel in the piste details overlay

[RealKaiserschmarren]

I mean, since ski-tunnels rarely exist, it's not really necessary, but it would be nice to have.