Site visited in December, 2010. Just arrived from Oman, seeing all their World Heritage Sites. It is not so bad with accessibility of Bat - there is a sealed road directly from Ibri via Ad Diriz. On a way from Ad Diriz there are already some marked excavations area (no named but at least there are plates). Just before entering Bat village you should turn left (road to Wadi Al Ayn). Bat archeological sites lies just 800 meters on the left. If you don't find it ask locals for UNESCO sites - the majority of them should know. Some structures extend also on the right side of the road. Total area is partly fenced, marked, graves or I should say structures are partly restored. One of those partly restored graves in Bat archeological site you can see on the photo.

For Al Ayn which is by far the most spectacular Unesco place in whole Oman, you can use the same road to Wadi Al Ayn - accessable but poor - but it is better to go Al Banah (watch for the signposts) and from there go to Al Ayn towards the road Ibri - Bahla. This road is now completely asphalted. If you enter Al Ayn just watch the hills - you cannot miss the graves.