Zoo gorillas have first taste of the open air this year. Mek and Mojna, the London zoo's famous gorillas are having their first taste of their open-air caged this season and are attracting large crowds by their antics. Although five years old, the gorillas are still only half grown. They were brought from the French Congo. Photo shows,Mok and Moina chore the interests of the crowd as they appear for the first time in their open-air cage this year. 21 May 1937