A few years back I stopped into a little town called Snow Camp, NC, and saw some amazing rooftops with wooden shingles filled with 
Cladonia lichens!  I had never seen colonies so large in this region before.  Recently, I realized that I would be passing by the town again and decided to take some photographs of this phenomenon.  I had to do some acrobatics to get close-ups of them.  You can click on the photos to see greater detail!
Standing on the back of a car to photograph the lowest of the Cladonia-filled rooftops.
 One half of a roof almost entirely covered with lichens.
  
A roof corner with Cladonia cristatella and other species.
A close-up of just one shingle.
Happy New Year!