130 penguins? Holy smokes that is impressive! This appears to be a huge enclosure that caters to the needs of the birds. Is there much more to the exhibit than what is shown in this photo?
Sadly I have only visited Emmen once, in the summer of 2002, one week or so before this truly amazing Penguin exhibit was to open. I dared to ask a keeper if I could see it as I wouldn't get a chance to it later, but wasn't allowed to, understandably ...