Terrain/Movement Costs?

[Ogrork the Mighty]

I was looking at the table in the PH and it seems a little on the generous side when it comes to certain terrain. For example, mountain terrain had a movement modifier of 2x, regardless of whether it was road/track. In 2E, the penalties were much higher - something like 6x or 8x for moving through mountains. Obstructive terrain also has a 2x penalty (underbrush, loose rubble, etc.), so I don't see how you could equate mountains with underbrush in terms of movement penalties.

Should mountains be higher cost?

 

[Infiniti2000]

There's a separate movement modifier for highway vs. road/trail vs. trackless. Highway and road/trail are the same for mountain terrain.