ATTENTION: in the whole valley ('Engelbergertal') there are NUMEROUS, UNMARKED, BARELY VISIBLE cables!!!
Check info at gondola stations/ ask local pilots! This cables very often are in positions, where you would expect them last!
Access
Gondola from 'Engelberg': http://www.fuerenalp.ch/english/home.php
Public bujses run from 'Engelberg' to here.
Rules
Airspaces in Switzerland are a tough subject, get all the info you can get before flying.
More info on http://www.flyland.ch.