The eastern portal in Greywell village is the largest winter bat roost in the country, and the second largest colony of Natterer's bat in Europe.
Today Levitt Hagg is the site of an abandoned quarry and landfill site, providing refuge for four species of bats, including whiskered, long-eared, Daubenton's and Natterer's.
August Natterer (1868-1933), also known as Neter, was a schizophrenic German outsider artist.
It is found in northern Bolivia (Beni Department and Santa Cruz Department) and Brazil (in the southern Amazon between the Tocantins River, Xingu, Tapajós, and Madeira Rivers).
Natterer's bat | Natterer's Bat | Natterer's | Johann Natterer | August Natterer |
71 different species of bird have been recorded, alongside foxes, grey squirrels, at least four (Pipistrelle, Natterer's Bat, Common Noctule and the rare Leisler's Bat) and as many as seven species of bat, 180 species of moth, 12 species of butterfly and 80 species of spider.
The device was created by Johann Natterer, a student of Adolf Martin Pleischl, for experiments creating liquid carbonic acid.