Complex sentence: The Little Mashel River is a small river in the U.S. state of Washington, possibly most notable for its 3 waterfalls within its gorge not far above its confluence with the Mashel River.
Split into simpler sentences: The Little Mashel River is a small river in the U.S. state of Washington. It contains 3 waterfalls within its gorge not far above its confluence with the Mashel River.