Apart from the Highlands Highway there are some rudimentary roads but they are a) slow and generally in a very bad shape think, muddy sludge and b) dangerous because of the occurrence of holdups. The recommended way to get around is to fly to the closest airport to where you want to go and trek from there. There is an abundance of tiny airstrips and these are often served by Mission Air Fellowship MAF, which has its headquarters in Mt. Hagen and operates twelve planes throughout PNG both supplying mission stations and supporting local communities. (http://www.maf.org.au/ind...) It is sometimes possible for tourists to fly with MAF.
