Registration for the Hel-Józefowo and Białośliwie-Wysoka trips will last until 2 October 2017, 12:00 hrs. You must pay by 3 October 2017 (the account of Muzeum Ziemi Pałuckiej must be credited by this date).
Sign here: https://docs.google.com/forms/d/e/1FAIpQLSfhxjluWQXtVX8pFLu9YYMpNy9-KOZ0na5dZMsZNEdypZ1otg/viewform
More information about the trips: https://zlotkolei.pl/pl/636/ruszyly-zapisy-na-wycieczki/
Remember that you must book and pay for accommodation in Hel on your own.