Wfrn-drapdna and Qrven-mrapdna are simply representative of the underworld entrance Troll Tube class. As such they to not have proper names but are numbered in the long dead tribal language of the Hebrides Islands Wild Sheep (here only loosely rendered in our alphabet for your convenience).
Throughout time, such tubes have extruded trolls regularly. Traditional trolls did have that problem with sunlight turning them into stone garden accessories, which displeased The Devil mightily. These two tubes, however, have been upgraded with galvanized outer cladding and concrete tile tops to form the more modern and durable class of troll (e.g. IT guys, copy repair men, and HVAC workers).
Emissions: Trolls
