Complex sentence: Telling Peter to leave and return, he turns up the battery's power and there is a huge explosion which produces a crater and melts the surrounding snow; at the centre of the crater Peter retrieves the battery and continues his journey.
Split into simpler sentences: Telling Peter to leave and return, he turns up the battery's power and there is a huge explosion which produces a crater and melts the surrounding snow. At the centre of the crater Peter retrieves the battery and continues his journey.