Welsh side of the Severn Tunnel

[mp01]

Are there any vantage points overlooking the tunnel portal on the Welsh side? I've seen a few old photos on flickr, but google maps seems to indicate that everywhere's now fenced off and overgrown.

Thanks.

 

[TGVDUDE]

http://www.jamiesquibbs.com/class-56.html theres a shot of 56311 in the cutting approaching the tunnel on this page, Think it was taken behind Caldicot station, but I'm not from the area so don't know exactly where/how it was taken I'm afraid