It is presently maintained as a refuge for bats during the winter months.
For bats, energy demands are particularly high during pregnancy or lactation.
As such, anything that attracts insects will also do so for bats.
Don't forget a flashlight - and watch out for bats.
The flowers are a source of nutrients for insects, bats, and some birds.
Since 1991 the fort has been closed to public access and is a protected habitat for bats.
There are no official statistics for broken bats, but he probably averages between one and two per appearance.
Today, the rest of the construction serves as winter quarters for bats.
The company is based in central Essex, still the main source of timber for bats around the world today.
The mine and its surroundings have since been made a protected reserve for bats.