The Forest and Hills is a recurring location in the Monster Hunter series, introduced in the First Game and appearing in all 1st and 2nd Gen games, and recently revealed in Monster Hunter X.
This was the first Hunting Zone seen by 1st Gen players, it consists, as its name implies, of deep forests and high hills, possessing temperate climate, many hunters love this location due to its layout being easily remembered.
A caved in area with a Resting Bed, a Supply Box, and a fireplace. There's also a Fishing Spot behind the Resting Bed, and a Spiderweb right around the camp, the perfect place to heal. Leads to Area 1.
No Monsters can appear here.
A grassy field bordered by a river and a forest. Frequently inhabited by Aptonoth but beware, during egg hunting missions Velociprey appear here. There is single Dung spot here (you can also gather Kut-Ku Scales from it) and a Bug Gathering spot.
A large grassy plain atop a cliff overlooking a forested countryside. Aptonoth graze here often. Shakalaka sometimes wait here to ambush Hunters. Many Wyverns come here often. Berries, Herbs, and Mushrooms can be gathered here.
A dry and dark cave, a perfect home for Wyverns, they often lay their Eggs here. Wyverns and large monsters will come here to sleep when they're injured, Velocipreys also appear here often, as they like to feed on Wyvern Eggs.
A thin stretch of land that cuts straight through the forest. There is also a little lake where the dead body of a Kelbi lies around. There are two passages, one where you have to crouch to enter, you can find a Bug Node there, and another one where you have to climb to you can find a Honey Comb.
A Felyne village where a Hunter can collect Barrels and Master's Skulls (High-rank only). You can retrieve the items that Melynx stole from you at the Drop Point and a Spiderweb can be harvested here. Melynx and Felynes live here.
In zones 8 and 9 there are oversized Kelbi carcasses. Though you cannot interact with them, you can sometimes see the Rathalos and Rathian eating from the one in zone 9 if you observe from a distance.
After killing 9 Shakalakas, a King Shakalaka appears in area 5
In 1st Gen games MH1 and MHF1, the camera in Area 9 stays closer than normal to the player, making it difficult to see your surroundings properly and consequently causing combat to be problematic; this is fixed in 2nd gen games.