The North Korean claim that the wall is only visible from their side reminds me of the Ha-ha: >A ha-ha (French: hâ-hâ or saut de loup) is a recessed landscape

The North Korean claim that the wall is only visible from their side reminds me of the Ha-ha: >A ha-ha (French: hâ-hâ or saut de loup) is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving an uninterrupted view of the landscape beyond from the other side https://en.wikipedia.org/wiki/Ha-ha https://en.wikipedia.org/wiki/Ha-ha