Trigonon Forest is the largest known forest on the continents. It is known for its densely-packed evergreen trees (including redwoods), as the forest stretches for hundreds of miles up the peninsula of the Northern Continent, starting at the base of Mt. Salem and following the Kamalakus up into Brillia. Part of it falls within the Nettle Kingdom and the other within FIMBA's designation.
This forest is not only where the Searchers meet the Color Pandoras and are attacked by Melcarba in the anime series, but it is also one of the six errantry locations in Monster Farm DS and Monster Rancher DS. It yields the best results in Winter.