The file - Datasets/greenlandSurfaceDEM5km.txt- contains a digital elevation model of Greenland. We downloaded the dataset from the National Snow and Ice Data Center- http://nsidc.org/data/nsidc-0092#
from IPython.display import Image
Image(filename='Figures/Topographic_map_of_Greenland_bedrock.jpg')
# Image from https://en.wikipedia.org/wiki/Geography_of_Greenland