I have been to Arches twice and both times I took a trail that took me to the arch. I remember there was another trail that took the visitor to a spot far from the arch and below it. This must be that trail.
Yes, it is the one that takes you much lower. It's good for afternoon viewing.
We did the other trail very early in the morning before dawn, in 8F temps, to catch the sunrise on it. I have many incredible photos of that morning. They will trickle
out in time. One of the very early in the morning shots is that there are no people in your photos, that had frustrated me two day earlier.