physiographical

/ˌfɪziəˈɡræfɪkəl/
adjective
  1. Relating to the physical features of the Earth's surface or the study of them (same meaning as 'physiographic').
    • The textbook described the physiographical divisions of North America.
    • The physiographical features of the park include deep canyons and high waterfalls.
    • Her research focused on the physiographical changes caused by volcanic eruptions.