Complex sentence: In recent years, there has been a growing interest to re-introduce lost animals back into Caledonian Pine Forests, and to this end, corporations have been set up to persuade the government to let them be re-introduced.
Split into simpler sentences: In recent years, there has been a growing interest to re-introduce lost animals back into Caledonian Pine Forests. So much so that corporations have been set up to persuade the government to let them be re-introduced.