The Doctor vs. the reality of Jaconda's catastrophic ecosystem where fictional gastropods from myth have become a biological horror causing planetary destruction

The Doctor and Peri land on Jaconda to find a wasteland of stripped trees and barren soil. The Doctor identifies the devastation as the work of giant gastropods, a myth …

The Doctor leads Peri and Lang through a dark passageway illuminated by his torch, pointing out ancient carvings that depict the myth of the Sun God’s vengeance on Jaconda. As …