Wikipedia:
"Gotska Sandön (literally translated as 'The Gotlandic Sand Island') is an uninhabited Swedish island [9 km long and 6 km wide] north of Gotland in the Baltic Sea. It has been a national park since 1909.
...
The island consists mostly of sand and is dominated by beaches, dunes and especially pine forests. Aside from a colony of grey seals, the higher fauna is not very rich."
https://en.m.wikipedia.org/wiki/Gotska_Sand%C3%B6n?searchToken=7cbxox54zg3qci18u5g9xnd2c
YouTube-film (8:35 long):
https://m.youtube.com/watch?v=9inkQYi5Mgg&pp=ygUOZ290c2thIHNhbmTDtm4%3D
The official web site:
https://www.sverigesnationalparker.se/en/choose-park---list/gotska-sandon-national-park/
Let's spend four days and three nights on this beautiful island in the middle of the Baltic Sea.
"On Gotska Sandön there is a varied range of accommodations from cabins to tents. You can bring your own tent and pitch it in the camping ground, and there are tents for rental with a bed, pillow and quilt."
Spakur and I have already booked and paid for the ferry return ticket (and a cottage for two) departing from Nynäshamn Thursday 19/6 at 7.45 and returning to Nynäshamn Sunday 22/6 at 20.00. Nynäshamn is about an hour from Stockholm City by commuter train/pendeltåg. Spakur has been there twice, I none.
Book your stay and ferry:
https://www.sverigesnationalparker.se/en/choose-park---list/gotska-sandon-national-park/visitor-information/getting-here/
Starting point:
Stockholm City platform 4 "Nynäshamn" at 5.55. The commuter train/pendeltåg leaves at 6.06.
Ending point:
Same as starting point.