About 85 miles southeast of Twin Falls, is City of Rocks National Reserve, and they will be hosting New Year's day adventures with first day of the year hikes.
Castle Rocks State Park will be having a luminary hike and winter celebration on Friday, December 17 and Saturday, December 18 at Almo Park from 7 PM to 9 PM.
There are a ton of places to go hiking near Stanley and Redfish Lake. If you have never been to the Lily Pond, it is a bit of a hike but totally worth it. And if you are not much of a hiker there is actually a ferry you can take to reduce the stress of the hike.