I've never been there, but from that photo it looks like a ha-ha is the actual barrier, and there are just some railings along either side of it. Also looks like there might be an electric wire running along the top of the railing on the zebra side.I don't really know if this is the right thread to post this on but how are animals that can jump high such as zebras contained by low fencing? Zebras are known to jump 6 feet/ 2 metres('Hartmann's mountain zebra can gallop up to 40 miles per hour and jump a 6-foot wall.https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://louisvillezoo.org/animalsandplants/hartmanns-mountain-zebra/#:~:text=Lions%2C%20hyenas%2C%20wild%20dogs%2C,jump%20a%206%2Dfoot%20wall.&ved=2ahUKEwi-s53ss4iFAxVWXUEAHeqlBxAQFnoECBAQBQ&usg=AOvVaw0CakhPdNJHOr75e-jJG351) These zebras in Fota are contained by what looks like fencing that is less than a metre. This side has 2 layers of walls but some other sides do not. These zebra are Grant's but I believe (probably wrongly) they should still be able to jump to a similar extent. jView attachment 693611(link to photo Fota Wildlife Park - Fairways and FunDays)