Feb. 23 in Liverpool as Cosmic Trigger play advances

Liverpool Confidential publishes a story on the Feb. 23 "Cosmic Trigger" event in Liverpool, featuring Daisy Eris Campbell and John Higgs. There are also a bunch of photos. I've copied one above; what's going on in the picture?

John Higgs also has published a group of photos on Facebook of the event. 

Update: Nick Helweg-Larsen explains that it's a scene from Daisy Eris' "Cosmic Trigger" adaptation, dramatizing RAW's first acid trip.