Below is a link to a small snipet of a video shot the other morning, we started just before the sunrise.
I’m there a few times..at the 25 second mark, 2nd from the left, at the 1:03 mark, jumping in and out of holes in the background. We are filming a video to show the different aspects of training at Jung SuWon Martial Art Academy, and the different training programs that are available.
Regarding the holes, some are shallow, some are quite deep. Depending on each person’s capability, there is something for everyone to participate in.