Haha! And isn't this at Lympne, unless the Howletts ones have been housed elsewhere other than their present cage.
I don't think the Howlett's enclosures ever had rocks in them, unless it was taken in the round cage slightly to the left of the clouded leopard complex, which housed snow leopards for a time, although I don't even think that enclosure had rocks. Its interesting that snow leopards do well in cages with high platforms, boxes and plant cover, given their natural habitat.
What where Temujin the pallas cat is now? or the one next door where Tai Wada and Matsi the clouded leopards live?