Metallica frontman James Hetfield has donated a massive area of his Marin County, California estate to conservation groups.
The Marin Independent Journal newspaper reports the move effectively forbids anyone from building on or developing over 300 acres of land overlooking the Lucas Valley.
The Marin Board of Supervisors has unanimously accepted the donation.
Spokesman Steve Kinsey tells the publication, "This is a really exciting offer. He (Hetfield) has become a heavy contributor to our agricultural conservation efforts."