Holly Springs, North Carolina. Holly Springs is a town in Wake County, North Carolina, United States. As of the 2010 census, the town population was 24,661, over 2Â½ times its population in 2000. Contents.
The release of magma along the Great Rift Valley began volcanic eruptions between 2 and 3 million years ago. The three separate summits of Kilimanjaro represent the overlapping releases that formed the mountain. Two of the peaks are considered extinct, and the third has been dormant for about 360,000 years.
The next section of this report notes diminishing glacial ice on Kilimanjaro, 85% gone since 1912. The youngest age date of volcanic material on the volcano is 165,000 +/- 5,000 ybp. No evidence of younger eruptions was found in studies of glacial ice on the volcano (Kimberly Casey, personal communication, June 2013).