You are looking for a unknown container on the White Trail.
Metal Heart is a song by American rock band Garbage, appearing on their fourth album.
This cache is part of the 2020 Winter Geocaching Series at Margaret Lewis Norrie State Park. There are 12 snow-friendly caches at this park. Numbers 1-11 are on a loop; number 12 is near the Environmental Center. Other Taconic Region parks participating this year are FDRoosevelt State Park and Rockefeller State Park Preserve. These caches will be available from January 1 until mid-April 2020.
If you missed it during the Summer 2019 Challenge, you can still go to the Taconic Regional Office for TRO – How Much is a Smiley Worth?