The rock outcrops of Tunstall Hills are part of the Ford Formation Zechstein Reef deposited in the Upper Permian, 255 million years ago. This corresponds to the period when Britain was near the Equator, and the area was a tropical barrier reef reaching from north Sunderland to Hartlepool. The reef formed a barrier between open sea to the east and a large lagoon to the west. When the sea retreated, animals became trapped and fossilised in the reef creating a highly fossiliferous reef coquina (shell-rich reef formation). This created a rock known as 'Middle Magnesian Limestone. Many rare reef fossils such as bryozoa and gastropods are found at Tunstall Hills.
The rock outcrops of Tunstall Hills are part of the Ford Formation Zechstein Reef deposited in the Upper Permian, 255 million years ago. This corresponds to the period when Britain was near the Equator, and the area was a tropical barrier reef reaching from north Sunderland to Hartlepool. The reef formed a barrier between open sea to the east and a large lagoon to the west. When the sea retreated, animals became trapped and fossilised in the reef creating a highly fossiliferous reef coquina (shell-rich reef formation). This created a rock known as 'Middle Magnesian Limestone. Many rare reef fossils such as bryozoa and gastropods are found at Tunstall Hills.
always loved walking the dogs up tunna hill many moons ago
It's a lovely walk especially if not too windy ☺️
If you want see rabbits up there,no chance late morning/afternoon ya need go 1st light or just before dusk
Aw we seen some a few weeks ago on an evening walk ☺️