Hamma Hamma Falls Olympic Penninsula Camping & Waterfall Tour. Mason County, Washington, United States. Hamma Hamma Falls Washington State USA. While camping with our Volkswagen Vanagon Friends, I went out searching for some local scenery and for some close up video of a mountain stream with Waterfalls. To my surprise, I discovered a waterfall on Lena Creek which appears to have no name and no trails leading up to it. That would be the frist waterfall in the video. From camp at Lena Creek, we drove the 6 miles to the end of the road to film the Hamma Hamma Falls. Filmed May 2016 An Aerial tour of some of the waterfalls known and unknown in the Hamma Hamma River section of the Olympic Mountains in May of 2016. This was on a Friday while preparing for a half dozen other Vavnagon Campers that were scheduled to arrive later that afternoon to help welcome Texas Vanagon's founder to the Pacific Northwest during his 8,000 mile Plus travels across the Western and Central USA. The first waterfall was unknown to us and to others that I have talked to since. It was on Lena Creek. The others are well known at the end of the Hamma Hamma River Road.