Tunnel
Permafrost is any ground that remains completely frozen—32°F (0°C) or colder—for at least two years straight.
He spreads the snow like wool; He scatters the frost like ashes; 17 He casts forth His hail like pebbles. Who can withstand His icy blast? 18 He sends forth His word and melts them; He unleashes His winds, and the waters flow.