Korona Gor Polski is a club uniting people who hike in Polish Mountains. In order to join the club, you need to buy a booklet in which you collect stamps from 28 mountains - highest peaks in all mountain chains in Poland. Some say it is a stupid chase after stamps and medal, however, for me it as a great challenge, fun, way to visit amazing places and make a lot of friends.
Highly recommended for people who like challenges and seek some adventure.
Let me describe the trips in parts as there were a lot of them, this is just a highlight and introduction :)
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From @zireal86