Essex Field Club on Facebook

Video about the Club

Argynnis aglaja
find out more... Dark Green Fritillary (male) Copyright: Robert Smith

Essex Field Club
Essex Field Club
registered charity
no 1113963
HLF Logo A-Z Page Index

Visit Our Centre

EFC Centre at Wat Tyler Country ParkIn January we are only open to the public at our centre at Wat Tyler Country Park on Wednesdays 10am-4pm.
Autumn recording Record Grey Squirrel Record Fly Agaric
Record Ivy Bee
Record Wild Teasel
Record Sloe, Blackthorn
Record Garden Spider Record Nigma walckenaeri spider

Geology Site Account

A-Z Geological Site Index

Ashdon Road Swallow Hole, SAFFRON WALDEN, Uttlesford District, TL56083908, Potential Local Geological Site

show OS map    

Site name: Ashdon Road Swallow Hole

Grid reference: TL 5608 3908

Brief description of site:

A swallow hole is a depression in the ground in a limestone or chalk area into which a stream disappears underground. Some swallow holes are not obvious on the surface and are merely a point where a stream appears to dry up as it percolates through its gravel bed to continue its journey underground.

An example of the latter is in the valley of The Slade where, during most times of the year, the stream disappears underground as it flows from the boulder clay plateau onto the Chalk at a point adjacent to the public footpath midway between Martins Wood and the Ashdon Road.


if you have an image please upload it

Reference: Whitaker & Thresh 1916 (p.47-48)

Geology Site Map
A-Z Geological Site Index