The border consists essentially of a single straight line orientated NW-SE, from the Saudi tripoint down to the Arabian Sea coast at Ras Darbat Ali. The exception is a small triangular 'kink' roughly halfway along the boundary line, which juts into Yemen so as to include the town of Habarut within Oman. Topographically the border traverses the Rub' al Khali desert in the north and the Jabal Qamar in the Dhofar Mountains in the south.