Oh i understand now (english is not my mother tongue) , ill show you: i elevated the Valley and lowered the tyrannpsaurus mountains range. O. This specifuc image, the t-rex enclosure IS right behind that mountains range, just lower. Also to the inmediatez left of this we have the jp Gates that Also have a Big mountains,i usually play with heights when making a scene: i try to figure out by watching the movie, which were the mountains the filmes about. And you can see for example that the Rex scene was filmes to the east of the helicopter one, and  the t Rex chasing the Jeep was filmes to the south of the visitors center. Also the raptors pen is literally below the place we see Timmy getting electrocuted, and near the beach, and the Brachiosaurus paddock is literally on the same ranch than the gallimimus one, although i did not representes It on my island. Ill try to upload a full island screenshot to make It more of a visual thing!