Jun 15, 2016 - 11:03 PM
in reply to Hyphos
This is partial answer, and not terribly satisfactory. Sorry, but it can hep you think about it.
If the station is manned, as a courtesy, the staff may be willing to hold your bag(s). These days, many small stations are no longer manned.
Next best- go to the nearest larger station. I did not look in the timetable or on the SBB site, but possibly the main station in Kandersteg might hold luggage....Spiez is a good bet, too. There are a fair number of trains on that route...you might be able to leave luggage at Kandersteg, go to the station you mentioned, and go back for it at Kandersteg after your hike.