First, you need to have a valid visa and copy of your visa with copy of passport.
Secondly: visit Afghan tour office in kabul or it's branches in provinces and ask them to issue you travel permit or region permit.
If you need help , how to do it, Let's Tour Afghanistan Agency help you with region permit.
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What is [ Let's Tour Afghanistan Agency]?
It's a licensed, experted , professional, trusted private and group tour guide agency in Afghanistan.
Services:
✅ Private and group tour guides in Afghanistan.
✅tour guide services with 6 official languages of United Nations( like Arabic Russian Chinese French Spanish English) plus Persian Germany Portuguese and Turkish.
✅ flexible itineraries.
✅ prepare invitation letter.
✅ visa support.
✅ region permit.
✅ accommodation.
✅ transportation.
✅ booking flights.
✅secure private guide in Afghanistan.
✅secure group guide in Afghanistan.
✅unforgettable journey from Afghanistan.
✅ your dream private and group guide in Afghanistan.
✅airport transfers.
✅ help in every travel details.