Sol Duc This was a great way to spend our 38th anniversary! Ron and Mary cooked us an awesome steak and lobster dinner! First we went on a short hike to see Sol Duc Falls, then we changed into swimsuits and went to the hot spring baths. It felt like heaven! There are four pools, each with a different temperature. The largest is filled with river water, and it is cold! The others are between 102 – 108 degrees. They drain them each night and refill them with fresh water from the hot springs each day.