When the snow covers the ground to a depth of not more than three or four feet, these intelligent creatures dig holes in order to reach the moss, and guided by some strong instinct they rarely fail to do so in just the right place.
"Due North or Glimpses of Scandinavia and Russia"
Maturin M. Ballou
There is no moss on it, nor vegetation.
"In Desert and Wilderness"
Henryk Sienkiewicz
Some moss was found among the rocks.
"My Attainment of the Pole"
Frederick A. Cook