Mods are located inside the “Prehistoric_Hunt_Data” folder in a folder called “mods”.
The folder name inside the mods folder is the name of the mod.
So:
"Game Location"/Prehistoric_Hunt_Data/mods/"Mod name"/

If you want to create a mod, Please create mods folder inside game data folder, if it is not there and then download the mod example from mod files to get started.

If you download a mod from Steam Workshop, it will be located in steam library workshop folder.

Press F6 in-game to activate mod menu, when mod is active.