# cpt-city: wkp/ice/wiki-ice-greenland (cpt)
#
# Subtle shades to depict the thickness of the Greenland
# ice sheet
#
# author: Eric Gaba (Sting)
# copyright: Attribution and share-alike required
# year: 2008
# url: https://phillips.shef.ac.uk/pub/cpt-city/wkp/ice
  10 247/253/254  1000 247/253/254
1000 242/248/248  1500 242/248/248
1500 229/240/242  2000 229/240/242
2000 217/231/233  2500 217/231/233
2500 207/225/228  3000 207/225/228
3000 195/219/223  3205 195/219/223