High Block and low block are key skills found in Taekwondo Poomsae and Karate Kata, however, little is known of their true interpretation and Application (Kor: Hae Sul, Jap: Bunkai).
This instructional piece was filmed during one of my classes on Poomsae. It contains Hae Sul/Bunkai of High Block and Low Block based on research and historic referencing. Though the film quality is marginal, I believe the information contained therein is worth viewing.