The central valley of Zion National Park is dominated by red and white sandstone monoliths. Driving east from the valley the road goes through the more than mile long Zion-Mt. Carmel tunnel. Built nearly a century ago, the tunnel is not large enough for many vehicles, so traffic must stop at times to allow wider or taller vehicles to drive through the center of the tunnel. At this higher elevation, there are wider views of wonderfully patterned sandstone. However, at the east side of the tunnel is a scenic trail that leads to a view back into the valley. In the second image below, you can see the road winding up in the shade to the tunnel.
The red sandstone and green trees and shrubs provide peaceful, but dramatic views.
Aside from the East Rim Trail, this side of the park has no designated trails. However, there are wonderful sites just a few steps off the road.
Nice views of the white Navajo sandstone which provides the identification of the White Cliffs of the Grand Staircase.
And you might get a delightful surprise of some wildlife. Two juvenile bald eagles played above the road, but no images of them beyond our memories. However, some mountain sheep posed for pictures before running off.