There are no walls that are only for kids but there are plenty of routs that are geared for beginners, or kids that dont have the reach or hight that adults have.
On Sundays they have kid climbing time where they have staff that can belay kids on the main walls. Lots of kids that age.
I did not see one built specifically for kids of that age, though they might be able to climb some of the bouldering routes that the adults climb.
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