You may have trouble finding the last two Points of Interest (POIs) and Hero Point (HP) in the GW2 Wayfarer Foothills map. These three things can be found in the upper right-hand corner of the map.
Rugnar’s Steading POI
This POI is located inside Cragstead. Go north from Dolyak Pass waypoint and approach the big wooden gate until you get the prompt asking if you want to enter Cragstead.
From the entrance, go north and take the first left into the steading.
Head north and take the first right
Warmspring Grotto POI and Ancient Cave Spring Hero Point
These two items are outside Cragstead. This is confusing, as they appear to be inside Cragstead if you look at the map. They are outside the Cragstead instance, on a different map layer.
Go north from the entrance to Cragstead and take the second right, into a tunnel full of cave spiders.
Continue through the tunnel into the cave at the end. The Warmspring Grotto POI is in the center. You will need to fight a Veteran Cave Spider to reach the hero point.