National Geographic : 1939 Dec
© National Geographic Society Finlay by Eric Matson PIGEONS ROOST IN THE DESERTED CHAMBERS OF A ROCK MONASTERY Doves monopolize thousands upon thousands of the old excavated chambers. They are not molested bythe inhabitants, for were itnot for the ferti lizer which the pigeons supply, it would be impossible to cultivate gardens in the volcanic pumice and tuff. Once each year the guano iscollected and spread over the fields. The modern town of Urgiip clings to the rock terrace (background).