Complex sentence: The Bureau of Land Management claims they own the Schmidt Tunnel, this is now in dispute as the previous legal owner, Tonie Evelyn Seger gave the land to Dave Ayers, her beloved caretaker for the last years of her life.
Split into simpler sentences: The Bureau of Land Management claims they own the Schmidt Tunnel. This is now in dispute as the previous legal owner, Tonie Evelyn Seger, gave the land to Dave Ayers, her beloved caretaker for the last years of her life.