Are there hiking trails here?

There is a a green belt walkway that will take you along the canyon past the Evel Knievel jump site and to the Perrine Bridge

Thanks all!

Not really true hiking, no. There are pretty cool walking around areas and vista points. Roads that are scenic to stroll.

Yes at the falls and also at Dierkes Lake next door to the Falls a loop trail around the lake about 2.5 - 3 miles hike.

Nothing significant, mostly observatory areas

Yes, several trails. Depending on how much rain they've had it can be muddy.

There are in the area but I'm not sure if there are some directly in Shoshone Falls Park area.

I don't think so, not in the areas where you park to see the falls. You are across the river from the falls. It is basically a big parking area with overlook points to see the falls.

Yes. Many

Can you drive in with an RV ?