Where To Find Wood Elf Blood. She also has one of the treasure maps. Don't go for bandits, their race is randomized.

Location of where to harvest wood elf blood for discerning the transmundane quest! This is a good spot to find the wood elf blood look for a bow on the ground to locate the blood. Nw of volunruud (north of whiterun) on the mountain you will see a trail of bloodstains.