These devices are radar domes. The largest is part of the National Air Traffic Services radar network and covers one of 30 overlapping regions of UK airspace. The one on the left monitors all aircraft within a 100-mile radius and the one on the right is a Meteorological Office weather radar which is part of a network of 16 radars across the country used to detect rain.

The little road makes its way up to near the top of Titterstone Clee Hill and you can see that it is a straightforward drive.

The little road seen from the same level as the car park near the top of Titterstone Clee Hill.

This view at the top of Titterstone Clee Hill shows the old Trigonometry Point with the Radar Domes and the landscape beyond. During the Bronze and Iron Ages there was a hillfort here.