A complex sentence is a sentence consisting of an independent clause and a subordinating clause. Or, to put it more simply, complex sentences involve more than just a straightforward noun + verb. Complex sentences include extra phrases added to a base sentence, but which cannot stand alone as a sentence. For example:
Published 4:00 am, Thursday, January 9, 1997. 1997-01-09 04:00:00 PDT Yosemite National Park -- Yosemite Valley is slowly drying out after what park rangers are calling the worst flood here in recorded history, leaving behind hundreds of upturned tent-cabins and acres of wrecked camping sites.
Yosemite National Park. Roadside. one of Yosemite's tallest and best waterfalls; 620 feet tall; this is a very popular attraction in Yosemite Valley; arrive early in the AM (before 8am or 9am) to snag one of the extremely limited parking spots; avoid weekends as they can be insanely busy. ADDITIONAL PHOTOGRAPHS. photos. DIRECTIONS / TRAIL GUIDE.