Alchemist Survey: Wrothgar 1,2 and 3 are broken. They show the blacksmithing icon and they are zero nodes to harvest in the spot. Don't know if this was mentioned before,but there it is.
I and II should be relatively easy to find as they are out in the open. III is a bit harder as it is on a little plateau that can only be accessed from the South-East side (I think).
You can find all the survey locations (and more) from our map. Just type "Survey" in the search box and click "Only Search in Current Map" below it.