In case you missed it last night BBC 4 had a series of excellent programs on the theme of Night, it being the longest night or shortest day. The main event of the evening was The Art Of The Night in which Waldemar Januszczak explores the influence of night time on artists ancient and modern, and I thoroughly recommend watching it. I was particularly struck by Nancy Holt's Sun Tunnels in Utah for it's simplicity yet other worldliness. This modern day Stonehenge could only be sited in the epic landscapes of the American west, it needs the space to exist without interruptions. Below is a video of the Sun Tunnels from You Tube by Andy & Lance Olsen although not as spectacular as watching it at sunrise or sunset.