I disagree, snakes can fall and land unharmed, especially if it was soft grassy soil. They are quite muscly, springy and resilient to falls. Now if it was 4 stories and concrete, then we are talking at totally different amount of force.
edit: also snakes in general are adept climbers and could easily scale the wall, if there were any grip at all. I have found my ball python hanging on the wall like spider man!