Complex sentence: A few weeks into the dig, Howard Carter had asked a page boy to fetch some water, he had done so, and then being bored and with nothing else to do, started to dig in the sand with a stick.
Split into simpler sentences: A few weeks into the dig, Howard Carter had asked a page boy to fetch some water. He had done so, and then being bored and with nothing else to do, started to dig in the sand with a stick.