Challenger Island and Little Kawau Island are listed as a park on Kawau Island, in the Hauraki Gulf Islands off Auckland. The earlier text describes Kawau Island as a whole, which is a wider place than this listing, so we have used only its location.
The directory holds no details of what the islands offer, how to get there, access, facilities, booking or what visitors say, and no figures for other parks nearby. So we can say no more about what the park offers or how it compares.