Popularity: Low to moderate. However, the spring is very much natural in every other way. This is the warmer of the two soaking pools, staying somewhere in the range of 104-105 F (40 C) all year round. In this episode, Zach takes a trip to the high desert mountain and wildlife mecca of Hart Mountain National Antelope Refuge.. Every episode:Listen to 65 episodes of Explore Oregon Podcast, a guide . . Thousands of years ago the lake was much higher, but todays drier climate has left it ringed with an alkali beach. amzn_assoc_marketplace = "amazon"; Scattered along the 1,500 feet of low basalt cliffs surrounding the lake are over 65 panels of rock art. All public use recreational activities on Hart Mountain National Antelope Refuge are regulated to protect wildlife, this differs from regulations on other public lands. After descending the Warner's there will be a sign to the left indicating the road to Plush and Hart Mountain - Oregon road 3-13. Camp Hart Mountain - 8 campsites, accommodate trailers, vault toilets, picnic tables, fire rings, generators, wheelchair accessible.