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Keum-Gang San (Diamond Mountain) is a mountain in North Korea, in the Tae-Baek range. Carvings have been found there of warriors standing on one leg with their arms in a particular position; that pose is now called keum-gang maggi, diamond block, and is featured in this poom se.

The pattern of this poom se forms the Chinese character, san, meaning "mountain", which is also apparent in the mountain blocks executed within the poom se.

From parallel ready stance:

Center line
Advance to form a left front stance, executing an inner forearm middle wedging block.

Advance to form a right front stance, executing an obverse high vertical palm heel strike.

Advance to form a left front stance, executing an obverse high vertical palm heel strike.

Advance to form a right front stance, executing an obverse high vertical palm heel strike.

Retreat to form a right back stance, executing a reverse high upset knife-hand strike.

Retreat to form a left back stance, executing a reverse high upset knife-hand strike.

Retreat to form a right back stance, executing a reverse high upset knife-hand strike.

Base line
Turn 90° left and lift the left foot to form a right crane stance (facing left), executing a reverse diamond block.

Step out with the left foot to form a left side parallel sitting stance, executing a reverse angle punch.

Advance, turning 360° left, to form a left side parallel sitting stance, executing a reverse angle punch.

Left line
Lift the right foot, tucking it behind the left knee, then turn 90° right to form a right side parallel sitting stance, executing a mountain block.

Advance and turn 90° right to form a parallel sitting stance, executing an inner forearm middle wedging block.

Recover the left foot to form a parallel stance, executing a low wedging block as a pressing motion.

Lift the left foot, tucking it behind the right knee, then turn 90° right to form a left side parallel sitting stance, executing a mountain block.

Base line
Turn 270° right and lift the right foot to form a left crane stance (facing right), executing a reverse diamond block.

Step out with the right foot to form a right side parallel sitting stance, executing a reverse angle punch.

Advance, turning 360° right, to form a right side parallel sitting stance, executing a reverse angle punch.

Lift the right foot to form a left crane stance (facing right), executing a reverse diamond block.

Step out with the right foot to form a right side parallel sitting stance, executing a reverse angle punch.

Advance, turning 360° right, to form a right side parallel sitting stance, executing a reverse angle punch.

Right line
Lift the left foot, tucking it behind the right knee, then turn 90° left to form a left side parallel sitting stance, executing a mountain block.

Advance and turn 90° left to form a parallel sitting stance, executing an inner forearm middle wedging block.

Recover the right foot to form a parallel stance, executing a low wedging block as a pressing motion.

Lift the right foot, tucking it behind the left knee, then turn 90° left to form a right side parallel sitting stance, executing a mountain block.

Base line
Turn 270° left and lift the left foot to form a right crane stance (facing left), executing a reverse diamond block.

Step out with the left foot to form a left side parallel sitting stance, executing a reverse angle punch.

Advance, turning 360° left, to form a left side parallel sitting stance, executing a reverse angle punch with a kiap.

Remain in the last position and await the paro command.