I literally just made this account so I can share this, Lol.
I know the beach is a bit messy, but other than that it is a large, flat island to build on.

Download:
https://www.mediafire.com/file/ec7b8ts1ig7gwk8/Isla%20Sorna.zip

NOTE: This map used mods such as: Jurassicraft, Fossils and Archaeology Revival, Clay soldiers, Galacticraft, Mekanism, etc.
If you do not have these mods, a message will show up when loading the map telling you that you are missing materials, click YES, that will delete those blocks/materials, making the map playable again.
Creative mode is the base gamemode, and cheats ARE ALLOWED.
Thank you for using my map, and have fun!