Isko Salmionen @isko will talk about his 4279km hiking on the Pacific Crest Trail Exploration Day at @tiedekulma @helsinkiuni @HELSINKISUS #HelsinkiSustainability. I will introduce him. https://t.co/Yat9CkagQ0

— Michiru Nagatsu (@Michurin) February 06, 2018 15:03