Complex sentence: As a consequence of witnessing injustice and cruelty, he had a penchant for painting flames, and his landscapes often contain signs or remains of human dwellings: forgotten logging camps, a prospector's shack, derelict habitations.
Split into simpler sentences: As a consequence of witnessing injustice and cruelty, he had a penchant for painting flames. His landscapes often contain signs or remains of human dwellings: forgotten logging camps, a prospector's shack, derelict habitations.