The western part is less often visited but offers the opportunity of river trekking or sawanobori (a form of mountaineering).

The Tanzawa Mountains are most accessible by Kanagawa Route 70, which runs between Hadano and Miyagase.

Toward the middle of the route is Kiyokawa Village, which offers lodging, camping, and fishing, and has a trail-head for hiking the mountains.

Like much of Japan, the moist climate allows for lush vegetation which offers habitats for a variety of wildlife.

The coniferous trees include Japanese cedar (杉) and Hinoki cypress (檜), and are mainly seen in the lower altitudes near the valleys.