What is the name of the 350m high hill and Gustav Arthur Graser and his brother Karl Graser co-founded a social reform settlement?
Gustav Gräser:  Together with his brother and fellow artist Karl Gräser, he co-founded one of the earliest social reform settlements, which was located along Monte Verità in Ascona. Monte Verità: Monte Verità (literally Hill of Truth) is a hill (350 m high) in Ascona (Swiss canton of Ticino), which has served as the site of many different Utopian and cultural events and communities since the beginning of the twentieth century, having started out as a popular destination for Wandervogel hikers during the Lebensreform period.
i don't know