Can anyone tell me what these things are called?

Taken at Pontypool & Blaenavon Steam Railway... great place fpr railway enthusiasts and photographers alike! Here's their website:
http://www.pontypool-and-blaenavon.co.uk/

Date: 13/06/10

Location: Blaenavon

Can anyone tell me what these things are called?
Can anyone tell me what these things are called?

Taken at Pontypool & Blaenavon Steam Railway... great place fpr railway enthusiasts and photographers alike! Here's their website:
http://www.pontypool-and-blaenavon.co.uk/

Date: 13/06/10

Location: Blaenavon