General:
* Lambak: This is the most common and general term for "valley." It's similar to the English word and refers to a low area of land between hills or mountains.
* Kapatagan: This is more general and translates to "plain" or "lowland." It can also be used to refer to valleys, especially those that are wide and flat.
More specific:
* Libis: This translates to "gorge" or "ravine," and refers to a narrow, deep valley often carved by a river.
* Lungga: This is a more specific term for a "hollow" or "depression" in the ground. It can be used for valleys, but is often used for other depressions like caves or sinkholes.
Formal:
* Talampas: This is a formal term for "plateau," which is a large, flat area of land at a high elevation. It can be used to refer to a large valley, especially one surrounded by mountains.
Ultimately, the best translation will depend on the specific context of your sentence. Consider the type of valley you are referring to and the formality of the situation.