Grindelwald First: Our experience: Flier, Glider, and trotti Bike 

Grindelwald First is an awesome experience for anyone visiting the Interlaken and Jungfrau regions.
First is only a 30 minute train ride from the Interlaken OST station.
Grindelwald first is a ton of fun for adventure-seekers with the following attractions:
First Glider - 4 person wide zipline where you lay down flat
First Flier - Traditional zipline - but much faster than the Glider
Mountain cart - Downhill & offroad tricycle adventure
Trotti-bike - 2 wheel down-hill scooter
Grindelwald first is a great time and we highly recommend it! it is lots of fun and the scenery is just amazing!