Prometheus stole fire from the gods and gave it to humans, a crime fitting a punishment worse than death. Prometheus was chained to a rock high up on a mountain top and every day a great eagle would swoop down and devour his liver as he lay naked and helpless. Every night the liver grew back and come morning the demon bird would return. Here Prometheus is writhing in eternal pain. Some stories find Heracles on his journeys coming up to the mountain top and freeing Prometheus from his punishment.
See this painting at Swart’s exhibition Myths & Legends on now at Figure Ground Art Gallery in Seattle. Read my exhibition review here: https://medium.com/figure-ground-art-review/the-art-of-martijn-caspar-swart-making-light-in-the-dark-4cbac0bed5a4