I'm actually saying that we did it every week, so I'm using imperfect there. However, I'm wondering if I need it to be like "escalabamos por montanas" or "escalabamos a montanas" or something, instead of "escalabamos montanas." To me, it doesn't make sense to put in an extra word. However, someone told me I need an article between the two words and I'm lost as to what that would be.
¡Gracias!