Stopped for lunch and coffee since I figured I had plenty of time to reach my end goal, which turned out to be true. Thank god for coffee.
On the map it's called "Gropedalen". Maybe it's a different place? There's a "biotopskyddsområde" here but the information on Naturvårdsverkets website is very sparse. Fornsök tells me that the area was unofficially protected by the land owner but I guess it's official these days. Need to check it out more closely.
I can't even tell what's down there.