Unobstructed (adjective)

Not blocked or impeded; free from any obstruction or hindrance.

Origin:

Late 16th century: from un-1 "not" + obstructed, past participle of obstruct.

Examples:

1. The view from the hilltop was unobstructed and breathtaking.
2. The path to the river was unobstructed and easy to follow.
3. The castle walls were unobstructed and allowed for a clear line of sight.
4. The runway was unobstructed and clear for takeoff.
5. The view of the stars was unobstructed and stunning on the clear night.