Heysen Tunnels
The Heysen Tunnels are twin tube road tunnels which carry the South Eastern Freeway under Eagle On The Hill in the Mount Lofty Ranges in South Australia . 
<triplet> Heysen Tunnels <subj> South Eastern Freeway <obj> carries <subj> South Australia <obj> located in the administrative territorial entity <triplet> South Eastern Freeway <subj> South Australia <obj> located in the administrative territorial entity <triplet> Eagle On The Hill <subj> South Australia <obj> located in the administrative territorial entity <triplet> Mount Lofty Ranges <subj> South Australia <obj> located in the administrative territorial entity