An LED lighting device with an elongated lighting cavity formed by two opposed elongated curved or angled structures is disclosed. The opposed elongated curved or angled structures are positioned such that the concave surfaces or acute angles of the two opposed structures are juxtaposed with respect to each to form the elongated lighting cavity having elongated openings. The LED lighting device included arrays of LED light engines attached to one or more surfaces of one or more of the two opposed elongated structures within the lighting cavity to emit light from the elongated openings. In accordance with the embodiments of the invention the relative positions of the opposed elongated curved or angled structures are adjustable to change the lighting profile emitted from the elongated openings.