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The NiN Leadership Team


Sensei Mark Roemke

Founder Pathways Dojo

Pathways Dojo was founded by Sensei Mark Roemke. He is a 15th Dan practitioner of Bujinkan Budo Taijutsu, the way of the ninja, and an unreasonably happy person. Those who know Sensei Roemke will tell you that he is always stoked with a true passion for learning, sharing and life in general. He is the driving force of Ninjustu, or the art of the ninja behind the Ninjas in Nature program and is the lead NiNstructor for the west coast NiN programs based out of Santa Cruz, California. 

He has been passionate about martial arts since before he started formal training at age 7. As a youngster he was New York state Tae Kwon Do champion, and began study of Bujinkan Budo Taijutsu as a young adult. He currently holds a 15th Dan rank with a license to teach from Grand Master Masaaki Hatsumi.

Sensei Roemke believes strongly in keeping an open mind when it comes to martial arts training. As a result, he continues to learn new techniques and styles whenever possible. His open minded “no ego” philosophy has enabled him to study extensively in numerous other martial arts including Enshin Itto Ryu Battojutsu (the art of sword drawing and cutting), Kenpo Kung Fu, DeCuerdas Eskrima, Seibukan Jujutsu and Gracie Jiu-Jitsu.

As an instructor, Sensei Roemke has a gift for conveying the knowledge and skills he’s acquired through decades of enthusiastic study and training.  Mark has built a community of gifted mentors who share Sensei Roemke’s belief that connecting people to nature is key to reviving the 18 “lost” skills of the Ninja.  



Kenneth Clarkson

Ninjas in Nature Program Director

Kenneth is the enthusiasm infuser of all things nature behind the Ninjas in Nature program. At an early age he was immersed in nature in the Blue Ridge Mountains of Virginia by way of canoeing, backpacking, birding, native plant studies, fishing, and hunting. He ran off to Alaska to become a federal wilderness ranger in the arctic following herds of caribou and tracking and avoiding grizzly. He thawed out later as an endangered species biologist in Hawaii before moving to California where he worked as an environmental education specialist and then a nature program director.

He has been teaching youth since his first job at age 13 as a swim coach and banjo instructor. He has been studying martial arts (karate, and now Bujinkan) since living in Hawaii. He has achieved Nidan (2nd Degree Black Belt) in Shorinji Ryu Karate, and more recently Shodan (1st Degree Black Belt) in Bujinkan.

His greatest skills and passions lie at the intersection of the pathways of nature connection, martial arts, and youth mentoring.  Together with Sensei Roemke, they have combined forces to create the Ninjas in Nature program. Ken is the lead NiNstructor for the east coast NiN programs based out of the Boston area of Massachusetts.

Ken has a M.S. in Wildlife Management from the Univ. of Alaska-Fairbanks. He is a former biologist for the Kona Forest Unit of the Hakalau NWR, and an Environmental Education Specialist for the USFWS SF Bay NWR. He was a backcountry ranger for Gates of the Arctic National Park and Preserve, and for 11 years prior to moving to the Boston area, he was Nature Awareness Program Director for the Riekes Center in Menlo Park, CA. 







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