A natural hot spring is a mineral spring with free-flowing water, where is no commercial facilities.
Normally such places are in secluded areas.
Penny Hot Springs in Colorado is, on the other hand, one of exceptions.
Read More Colorado, Rating [2/5] Hottest, Natural hot springs
Volcanic activities sometimes have destructive influence on human society.
Out of them, an ultra-Plinian eruption brings on a particularly large explosion that causes global change in environment and mass extinction.
Around such supervolcano, hot springs have been gushing over one million years after the eruption.
Read More New Mexico, Rating [1/5] Jemez Springs, Lukewarm, Natural hot springs
Rio Grande Gorge Bridge is the seventh-highest bridge in the U.S.
An unfinished resort with hot springs is located at the bottom of the deep canyon.
Read More New Mexico, Rating [2/5] Lukewarm, Natural hot springs
Where did ancestors of American Indian choose places for dwelling?
There is a historical dwelling in the northern area of New Mexico, surrounded by rich natural environment of the highland.
Near the holy place, there is a hot spring straight out of the ground.
Read More New Mexico, Rating [2/5] Natural hot springs
Sometimes hot springs and caves are related.
Gushing springs sometimes create a cave, and its rustic atmosphere makes hot springs more attractive.
Inside the cave, you may have a mysterious feeling of relief.
Read More New Mexico, Rating [2/5] Jemez Springs, Lukewarm, Natural hot springs
The border between the United States and Mexico becomes the focus of attention because of the President Trump’s promise.
While dipping in the hot spring that is located nearly on the border, what do you see from the tub?
Read More Rating [2/5], Texas Lukewarm, Natural hot springs
It is 2.5 hours’ drive from San Diego to a picture-perfect oasis in the desert of Imperial Valley.
Warm water is gushing there without being known to the world.
Read More California, Rating [2/5] Lukewarm, Natural hot springs