Lulsgate Plateau is the name given to the Carboniferous limestone

Carboniferous limestone

Carboniferous Limestone is a term used to describe a variety of different types of limestone occurring widely across Great Britain and Ireland which were deposited during the Dinantian epoch of the Carboniferous period. They were formed between 363 and 325 million years ago...

 hills which form a northern outlier of the Mendip Hills

Mendip Hills

The Mendip Hills is a range of limestone hills to the south of Bristol and Bath in Somerset, England. Running east to west between Weston-super-Mare and Frome, the hills overlook the Somerset Levels to the south and the Avon Valley to the north...

, southwest of Bristol

Bristol

Bristol is a city, unitary authority area and ceremonial county in South West England, with an estimated population of 433,100 for the unitary authority in 2009, and a surrounding Larger Urban Zone with an estimated 1,070,000 residents in 2007...

, England, approximately 600 feet (182.9 m) above sea level, which has been occupied since prehistoric times.

The major feature on the plateau is Bristol International Airport

Bristol International Airport

Bristol Airport , located at Lulsgate Bottom in North Somerset, is the commercial airport serving the city of Bristol, England and the surrounding area. At first it was named Bristol Lulsgate Airport and from March 1997 to March 2010 it was known as Bristol International Airport...

. Cutting into the western edge of the plateau are two combes, Brockley Combe

Brockley Combe

Brockley Combe is a wooded combe near the village of Brockley in North Somerset, England. The combe cuts in to the western edge of the Lulsgate Plateau, the Carboniferous limestone hills which form a northern outlier of the Mendips, south west of Bristol....

 and Goblin Combe

Goblin Combe

Goblin Combe is a valley in North Somerset which stretches from Redhill, near Bristol International Airport on the A38 through to Cleeve on the A370. The combe is located at , and is a biological Site of Special Scientific Interest originally notified in 1999, with being managed as a nature...

 a 52 hectares (128 acre) biological Site of Special Scientific Interest (SSSI). There are two major roads in the area — the A38

A38 road

The A38, part of which is also known as the Devon Expressway, is a major A-class trunk road in England.The road runs from Bodmin in Cornwall to Mansfield in Nottinghamshire. It is long, making it one of the longest A-roads in England. It was formerly known as the Leeds — Exeter Trunk Road,...

 cuts across the top of the plateau, while the A370

A370 road

The A370 is a primary road in England running from Bristol to Weston-super-Mare and on to East Brent in Somerset. A more direct route from Bristol to East Brent is the A38.-Route:...

 runs along its western edge. Both run in a southwesterly direction, and join Bristol to towns and villages in Somerset

Somerset

The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...

. To the west of the plateau are the North Somerset Levels

North Somerset Levels

The North Somerset Levels is a coastal plain, an expanse of low-lying flat ground, which occupies an area between Weston-super-Mare and Bristol in North Somerset, England...

, and to the south is the Yeo valley.