Roll of Blueprints for a Prototype Something

This is a lost artifact, known only through ancient stories of long-deceased ancestors, and has not been discovered in Ur. In a wild flurry of imagination, Weena the visionary had drawn, in a flash of inspiration a meticulous set of plans for a vehicle that would be able to plunge to unimaginable depths. Sketching quickly and with great urgency, there are parts where the dullite nib has almost town through the special graded scientific paper, dyed with whortleberries. Some lines and measurements are still visible though, and the words, ‘core’, ‘degrees’, ‘important’ and ‘potato’.