Bäckahästen is a mythological brook horse derived from Scandavian folklore. Celtic folklore also describes shape-shifting horses called kelpies. Bäckahästen could be a kelpie parallel. He is a beautiful white horse which appears in foggy weather to lure people to climb his back. After that, he gallops away and the rider is unable to get down. Bäckahästen just jumps into the river drowning the rider in the process.