Explanation:

- Zojila Pass: Located in the Indian Himalayan region, this pass connects the Kashmir Valley with Ladakh.

- Bolan Pass: Situated in Pakistan, it is not part of the Indian Himalayan region. Often used historically for trade routes, it links Afghanistan with Pakistan.

- Shipkila Pass: This pass is part of the Indian Himalayas, situated on the India-China border in Himachal Pradesh.

- Lipulekh Pass: Found in Uttarakhand, India, it serves as an important route for pilgrims visiting Mount Kailash in Tibet.

Your selected option is correct:

- Bolan Pass: This pass is not in the Indian Himalayan region.