The English geologist William Buckland discovered a fossilized hyena den in Yorkshire, containing a remarkable collection of bones from extinct animals such as lions, elephants, and rhinoceroses. Buckland's careful analysis of the site provided compelling evidence for a prehistoric world inhabited by species now vanished from Britain. His work helped to establish the field of paleoecology and demonstrated the power of geological investigation to reconstruct ancient environments.

Buckland's discovery of the hyena den offered a vivid and detailed snapshot of a prehistoric English landscape, populated by creatures that seemed almost fantastical. This find, and Buckland's engaging scientific writing, fired the public imagination and contributed to the growing fascination with the 'lost world' of the past. The image of a hyena den, a place of ancient and violent life, inspired poets to contemplate the wild and untamed aspects of Britain's deep history.