I took part in Amy Sharrocks' artwork Walbrook on Friday, a walk which recreated the course of London's underground and lost Walbrook river. About 30 people, all wearing blue, were tied together and walked the course of the river from Islington to Cannon Street Bridge.
As we set off, I found that, rather than learning a lot about where we went through, the geography of the city was slipping past. I was talking and learning about other people in 'the river' - almost oblivious to what was going on around us.
I noticed placenames with watery connotations, but they slid past. I was able to photograph some, some I missed.
The blue elastic ribbons holding us together were sinuous - at one point I was wrapped and surrounded, later I only had two ribbons tied behind me. It moved around silently, unbeknownst to me, like water when you swim.