Well this is a huge shot in the dark, but I might as well put the internet to good use! Lately myself and my friends have been playing risk, (old school!) When digging around my dads loft I found a near mint copy of Lord of the Rings Risk! It is awesome, but weirdly it only comes with the top half of the board. Gondor and Mordor are missing. Intrigued I looked online and found this comment on wikipedia.
" Criticism-Many fans were upset about the initial release of "Risk: Lord of the Rings edition" because it did not include the regions (continents) of Gondor and Mordor...It was thought that the "Trilogy Edition", to be released a year after the first, would be something of an add-on pack, including only Gondor and Mordor and intended to be lined up with existing Risk sets. However, the "Trilogy Edition" was actually a large super-map, containing all the original regions as well as Gondor and Mordor. As a result, fans that bought the original edition were left with "incomplete" Risk maps and would have to buy an entirely new game if they wanted the "full" version, although Hasbro did offer them an add on for a fee