Answer:

horizon

Answer	Crossword Clue
HORIZON	"Lost ..." (novel that coined the term "Shangri-La")
HORIZON	As far as the eye can see
HORIZON	You can't see beyond it

HORIZON	Vanishing point
HORIZON	Landscape feature, often
HORIZON	"Lost .." (Hilton book)
HORIZON	Earth-sky boundary
HORIZON	Limit of vision
HORIZON	Sunset setting
HORIZON	End of the visible earth.
HORIZON	Range of perception.

HORIZON	Where ocean meets sky
HORIZON	Range of perception
HORIZON	Seeming intersection of earth and sky
HORIZON	Where heaven and earth meet
HORIZON	O'Neill's "Beyond the ..."
HORIZON	A ship may appear on it
HORIZON	Skyline
HORIZON	Sunset spot

HORIZON	What a setting sun dips below