This picture with good reason can be called allegorical. Two people stand on a stony path and peer into the distance. Beside them – a large boulder and a spruce.
The moon is placed in the center of the composition and separates the “living” half of the picture with a boulder and a green spruce from the “dead” with a dead tree.
Related Paintings
Moonrise over the sea by Caspar David Friedrich 
Cross in the mountains by Caspar David Friedrich 
Evening by Caspar David Friedrich 
Moonrise by Caspar David Friedrich 
Steps of life by Caspar David Friedrich 
Hina, the goddess of the moon and Te Fatu, the spirit of the earth (Moon and Earth) by Paul Gauguin 
Graves of ancient heroes by Caspar David Friedrich 
Shipwreck in the Arctic by Caspar David Friedrich