I love "boneyard" sculpture. To call it a monument is to do them dis-service. They're sculptures. While some of it today is entirely mass produced, it is still incredible what man creates as a pillar to the dead. My favourite one is the Angel of Grief by Story.
It features in one of my thesis chapters.
I do love this one that you shared, though:

It reminds me of the painting "The Lament of Icarus" by Herbert Draper.

I love Art so much
I remember. I really loved your thesis and was glad you published it :) i didn't know this one. Beautiful.