Arrowhead Springs has a rich history, the most famous of which is its association with the natural geologic formation of an “arrowhead” situated on the mountainside. The “arrowhead” shape measures approximately 1,375 feet in length and 449 feet in width, covering 7.5 acres. It is visible from as far away as 30 miles. Scientists cannot agree or conclude what the exact origins are of this phenomenon. Among numerous legends, one told by native Americans is recorded:

geologic "arrowhead" on the mountainside

“Ages ago the Great Father, displeased with the arrogance of his children, sent a hot, fierce spirit named Isel from the Sun-land to blight their vegetation and drink their streams dry.  They strove to appease the wrath of the Great Father by offerings, but the scorching breath of Isel continued.  Finally came a voice demanding He-sah-na (Maiden of the New Moon), daughter of the chief of the tribe, as a sacrifice.   The chief led her forth, and when the rite was completed the heavens opened and a white arrow of light came and struck down Isel.   Another hit the mountainside and left its mark there as it is seen today, a symbol of sacrifice.”

All uses of the word "Arrowhead" in this region of southern California find their origins from this natural occurrence on the mountainside. There have been times in recent years when the landmark was scarcely recognizable.  In the 1930s, the Forest Service constructed stone and concrete dams, and fences of wire netting to cover deep gashes caused by erosion. In the 1950s, the Boy Scouts of America did repair work, and in 1957,the U.S. Forest Service designated the site as the Arrowhead Landmark Geological Area. That same year, thousands of fire-resistant plants, called Rock Rose, were transplanted from nurseries to make the Arrowhead more immune from wildfires.

Another geological phenomenon special to this property is its "hot springs" that emerge from deep in the rock cavities of the landscape. So unusual are these springs that people have enjoyed their attributes throughout history. Still existing on the property today are the famous "steam caves". Although damaged from recent fire, they will be remodeled to capture the therapeutic steam vapors. An elevator provides easy access from the historic hotel to the steam caves.