Horse power is used to run a saw to cut wood at the kings Landing Historical Settlement in NB, Unite States of America.
It is so strange and yet very interesting to see today the old technologies that people used in the past. People used horses a lot both in agriculture to work the land and to transport cereals and vegetables and in the forest where horses were used to cut logs and to pull them in easily accessible places.
But watch this video. Such old wood cutting technologies will probably only be available in museums in the future.