Complex sentence: Northern Escape Heli-skiing is a heliskiing company that was founded in 2004 and is located in Northern British Columbia's Skeena Mountains and centered in the town of Terrace.
Split into simpler sentences: Northern Escape Heli-skiing is a heliskiing company that was founded in 2004. They are located in Northern British Columbia's Skeena Mountains and centered in the town of Terrace.