From Hafoof to Dammam 100 KM only

JUST FOLLOW THE SALWA ROAD FROM DOHA and you will reach to Al-Khobar.
By the road from Qatar/ Hafoof Al-Khobar is shorten then Dammam and the road from Qatar turns towards Bahrain/ Al Khobar/ Dammam (same road)and just follow the sign board. Its very easy.

Can you pls tell me the visa procedure from Qatar to Saudi Arabia is there any formalities or we can have on arrival visa?

I'm staying in Dammam and have to relocate Doha shortly.