Doubletop Mountain is a mountain located in Piscataquis County, Maine, in Baxter State Park. According to Fannie Hardy Eckstorm, the mountain's Indigenous name was Psinskihegan-I-Outop. Psinskihegan means notch and I-Outop means head. in 1828 in the Survey of Maine, Moses Greenleaf called the mountain a variation Chinskihegan or Outop. It e…Doubletop Mountain is a mountain located in Piscataquis County, Maine, in Baxter State Park. According to Fannie Hardy Eckstorm, the mountain's Indigenous name was Psinskihegan-I-Outop. Psinskihegan means notch and I-Outop means head. in 1828 in the Survey of Maine, Moses Greenleaf called the mountain a variation Chinskihegan or Outop. It eventually became Doubletop, named for its two peaks.