Bastuföreningen (2 pics and a couple of links)
 

Okay more of these crazy Scandanavian student initiation events.

Bastu is sauna. föreningen is.....? It's some sort of stage presentation a-la Balloondance.

2 pics one before one after.

2 youtube links:
1st link: a vid of the pics above.
http://www.youtube.com/watch?v=KBWgGlLBI3c

2nd link: bastusloppet. Sauna Race I think. Running through the streets and malls of some Swedish town, topless and stark bollock naked.
http://www.youtube.com/watch?v=xeVHug367aA

There are more links to other bastusloppets in youtube.

N-Joy.

Awesome!

I found a few more videos
 

Enjoy!

bastuloppet 2006

hxxps://www.youtube.com/watch?v=iR1laUPAMBI

Bastuföreningen

htxxs://www.youtube.com/watch?v=KBWgGlLBI3c

hxxp://youtube.com/watch?v=itRKQxOUu6Q

Bastuloppet 2009 trailer

hxxps://www.youtube.com/watch?v=sXkb7dv9SiQ

Bastuloppet 2009

hxxps://www.youtube.com/watch?v=0tnJvuhh97o

Bastuloppet 2009.flv

hxxps://www.youtube.com/watch?v=poRo0NsmW9U

Bastuloppet 2010

hxxps://www.youtube.com/watch?v=LJBjCt_rJ_Y

Behind Linda Isacsson:) (rear nudity as three women exit sauna and then doff their towels to jump in lake)

https://www.youtube.com/watch?v=2LrTJxw7Dh8

Bastuloppet
 

I found the flickr account of the Swedish student-photographer who took the pics in the first post of this thread. Her name is Jenny and she's quite cute herself. Here are those pics again in bigger file sizes plus a few more from the presentation called the Bastuföreningen - which translates to sauna association. The blond in the black skirt is obviously the girl in the middle above giving us such a nice view of her butt.
Here are the pics again from her account in a bigger file size.

interestingly, if you slow down the video of the towel drop ,at 1:11 you can see the flash go off right by the videographer - that is probably the flash from our photographer since the angles are so similar.

Bastuloppet
 

Here's the Bastuloppet - which does translate to sauna race. These pics were taken by the same student/photographer, Jenny. She seemed to take as many as she could, very quickly, as the runners raced by her. A couple shots though click all the boxes of ENF, NIP and hidden nudity!