In ancient times, a river sourced in this range known for silt-colored yellow water, flowed down to an artificial hexagonal port expanded by Trajan called (*) Ostia.
GPS scans revealed that this mountain range grew approximately 4 centimeters during an earthquake in August 2016 that caused the deaths of 297 people. Its highest peak has a name meaning "Big Horn." A peak called "Mount Titan" found in this mountain range is one of "three towers" of a small republic. In ancient times, a river sourced in this range known for silt-colored yellow water, flowed down to an artificial hexagonal port expanded by Trajan called (*) Ostia. Geographically, this range separates a region often likened to a "heel" or "stiletto" named Apulia from more western regions, which contain subranges of these mountains such as the "Samnite" and "Campanian" ones. This range contains the headwaters of the Tiber river. For 10 points, what mountain range runs the length of Italy?
GPS scans revealed that this mountain range grew approximately 4 centimeters during an earthquake in August 2016 that caused the deaths of 297 people.
Apennine Mountains [or Apennini; do not accept or prompt on “Alps”] &lt;WA, Geo&gt;