Complex sentence: On the northern side of the apse there is a mural painting of six angels, and in front of the apse, there is a image of what appears to be a dog on top of the remains of a frame.
Split into simpler sentences: On the northern side of the apse there is a mural painting of six angels. In front of the apse, there is a image of what appears to be a dog on top of the remains of a frame.