They do not seem like the tropical jungles of central Africa, as the trees are various pines and firs. Also, it is cold enough to where you can see the breath of the characters. But it was later mentioned that Earth-2 Africa was "not hot" because "global warming was not a thing here", so it was not a goof.
Before the big fight, Caitlin asks Barry if he's sure he would be able to take a life. Barry had already killed at least one meta human (Sand Demon) and had left several others in conditions where there's a good chance they were killed, but it was never confirmed. Caitlin was involved in every one of these missions and Barry never showed any remorse.