The baboon enclosure was constructed in 2000 and the last of the remaining baboons were euthanised in February 2019. The plan from the zoo, at that time, was to turn it into a walk-through enclosure for Ring-tailed Lemurs but it remained entirely unused for an whole year (Feb 2019 to Jan 2020) until a pair of Boer Goats were placed in it.
I didn't see the goats today but I'll presume they are still in occupation until ... well, until whenever the lemur thing actually happens.