Modern-day rediscoverer of Antelope Cave
In Chapter 19, Alice describes her first visit to Antelope Cave in 1930 with her husband, Winferd, who discovered the cave "some years back"--most likely in the earily 1920s or perhaps a tad earlier. The cave is in northern Arizona, southwest of Colorado City and Hilldale, southeast of Hurricane, Utah, very close to where a large power transmission line traverses the Arizona Strip just west of Clayhole Wash in Mohave County, Arizona.
The cave was listed on the National Register of Historic Places on 10 October, 1975.
In the November 13, 1974 issue of the Kingman Daily Miner, Roman Malach published an article in his column, Malach Writes, titled "Dusty Trip to Antelope Cave" wherein he shares a lot of interesting information about the cave and various archealogical excavations that have taken place there. He doesn't mention Winferd's discovery of the cave, nor the apparently earlier-than-1950 digs by Brigham Young University.
Because of the historical and archeaological significance of this site, public access to the cave is prohibited. Thick, steel bars prevent access to unauthorized persons.
The Megalithic Portal has a web page with some information and includes a map of the location. See https://www.megalithic.co.uk/article.php?sid=37783
Also Keith L. Johnson, coauthor of a paper available at Research Gate includes a map noting the cave location:
