Our usual meeting point is on Sharjah-Kalba Road, a roundabout in a small village called Shawka. We park the cars there and head to the trails on our bikes.
Here is a link to the meeting point: KOM MEETING POINT
The meeting point is secured and safe to leave the cars unattended, day or night.
Another meeting point were the MTB community organize events every year is in Shawka Dam 2. A lot of riders park their cars and camp over night then ride in the morning.
Here is a link to Dam 2: Dam 2 Meeting Point