Question: what sea is located south of the indus river valley
Answer: Originating in the Tibetan Plateau in the vicinity of Lake Manasarovar , the river runs a course through the Ladakh region of Jammu and Kashmir , towards Gilgit - Baltistan and the Hindukush ranges , and then flows in a southerly direction along the entire length of Pakistan to merge into the Arabian Sea near the port city of Karachi in Sindh .