72625 posts
Unsure whether it is of any help, but you can travel the two lakes Thun and Brienz on a Lazy Monday at a reduced rate around 28 CHF. Realistically you would struggle get around both lakes, but there are areas which are well worth a stop. If you are staying in the interlaken area you will probably be entitled to a guest card allowing free bus and some train travel within the local area. Harder Kulm is also an offer with the guest card (2011)
If on a tight budget, Harder Kulm cable lift at interlaken is a good 10 CHF round trip with a good circular walk at the top , and of course somewhere to get drink/food, although I would have a coffee at the Lake brienz ticket kiosk at Interlaken near Ost train station.
the falls opposite Brienz is a worth a visit and the funicular travels from the where the boat comes in. If you time it right you can travel on the exquisite old paddle steamer.
Again a lovely walk up the path of the falls, with super views across the lake.
Hope this may be of help
15483 posts
Hi drdaipayan,
In addition to the excellent tips provided by madralph: I would recommend you to take a look at the detail network map linked from the Swiss Pass page. It shows exactly what’s covered for free and what’s discounted. The map and the timetable allow you to plan a nice trip for a reasonable price.