The type of underlying rock can be decisive for how many different types of plants are found in an area. In the area around Hamlagrø-lake the diversity is especially obvious. The geological conditions change much here within a short distance.
"And here these endless kingdoms and these toils for a rich working life far and wide have lain and slept for a hundred thousand years! Right up until the Voss Railway came in 1883 and woke them, like the prince in the fairytale who awakened the Sleeping Beauty."