Try Shambala festival in August, It’s got a wide variety of dance and has a trippy forest there .. not quite as stunning as that one in your pic though!

Home | Shambala Festival 2012 | 23rd – 27th August
http://www.youtube.com/watch?v=gETuS2M4nwc

http://www.youtube.com/watch?v=cFl9ioCN3rc

http://www.youtube.com/watch?v=7qAwDIeYtSQ

not much psytrance tho … but it’s massive good vibes and loads of D+D etc. at night. 😀