Never seen so much wild brown trout at once (Hamlagrø, Norway)

We we’re walking from the mountain lake, back down to the cabin following the river when all of a sudden we saw a small ”splashing commotion”. We ended up seeing about 50+ wild brown trout, migrating from a smaller lake to a bigger one through the river. I caught a small brown trout earlier but decided to let these ones go even though i could have gotten 10 of them with just a rock and sheer force. I’ll catch them with a fly next year!