If by horizontally you mean on the horizon, then yes it can be seen this way. Given the right conditions and time you can watch the moon rise and set on the horizon.
The Apollo 11 Moon landing and subsequent moon landings by the Americans have used a cloth flag with an aluminium post and support arm. The support arm suspends the flag horizontally. Since there is no atmosphere on the moon if it didn't the flag would always be seen furled.
The moon is seen from the Earth...
Seen where - in the sky Seen when - after the full moon.
No angels were reported to be seen at the moon.
Only our moon ("The Moon") can be seen from Earth.
The moon's phases can be seen from the earth, but not by an observer on the moon. Similarly, the earth's phases can be seen from the moon, but not by an observer on the earth.
Only half part of the moon is seen during full moon.
the face in the moon
new moon
There's only one difference between the sky seen from the Earth and the sky seen from the moon. The sky seen from the Earth has a moon in it, and the sky seen from the moon has an Earth in it. Other than that, exactly the same objects in the same patterns are seen from both places.
No airport on earth can be seen from the surface of the moon by the unaided eye.
A bat is seen while the moon is or was out.