Interestingly, the old Mangrove house has been connected to the new round biome house as an entrance I think.
The old mangrove will be torn down, when the new one is finished, but it already holds the plants that will go into the new dome.
Which small enclosure?
On the left of the path, there is a smaller enclosure, a bit tucked away, it is connected with a tunnel under the path to the main enclosure, but it is normally used for baby aardvark and their mother.