Hillen produces photo montages of mythical environments, based on his home country of Northern Ireland. His work has been heavily influenced by the troubles and conflicts the country has seen over the years. His images are a collaborations of photographs and found imagery.
"These are scalpel-and-glue photo montages. The older ones were made between 1983 and 93, were always based on my own documentary photographs made in northern Ireland, and were somehow related to and to an extent engaged in, the northern conflict.I was born and grew up in Newry, a small but sometimes busy town just on the northern side of the Irish Border. Situated just at the head of the picturesque lough in the 'Gt. Pyramids' picture, it has experienced more than enough of the 'troubles'.