If you like Bristlecone Pines, I highly, highly recommend checking out Great Basin National Park and hiking up to the Bristlecone Pine Grove. It's a lovely day hike - I did it over Thanksgiving weekend and used those little snowtrax grippers over my hiking shoes.

https://www.atlasobscura.com/places/the-bristlecone-pines-of...

Could be done around now-ish in snowshoes as well.

One of the least visited and most beautiful national parks in the US! Sparkling stars and dark skies make for great meteor viewing, and the bristlecone pine trail has a loop through all the interesting trees with little signs and "biographies" about each tree.

One of the largest is Prometheus: https://www.nps.gov/grba/learn/historyculture/the-prometheus...