A few days ago I joined a beautiful walk between the cities of Kamakura (鎌倉市) and Zushi (逗子市). The route follows ancient paths with man-made carved cliffs (大切岸 ookirigishi) and passageways (切通 kiridooshi) that used to protect the Kamakura shogunate. In particular, the route passes by the Nagoe-kiridoshi (名越切通), one of the seven major passageways that still remains close to its original form. Another interesting spot is the so-called Mandara-dou Yagura-gun (まんだら堂やぐら群), a group of cave-tombs carved into a clif.
Even if you are not interested in its historical value, the route has a lot more to offer. The beauty of its paths, the variety of trees and the smell of the Japanese wisteria flowers (beginning of May) are all worth the walk.
I have prepared a file containing the route I walked: nagoe-kiridoshi-pass.kmz. The file can be opened in Google earth or converted to your favourite GPS file format. The route starts and ends in Kamakura station. First, get on any of the following buses (you can walk instead): JR bus (platform 5) or Keihin buses no. 23, 24 and 36. Make sure your bus stops at Jōmyō-ji (浄明寺), the bus stop where you want to get off. Near the bus stop there should be a Spanish restaurant called La Casita. If you find it then you are on the good track. Then, just follow the route described in the .kmz file. There may be a few mistakes in the file, but I think it's mostly accurate. The route includes marks for the major spots, and suggestions for having lunch by the sea or for taking a break at a nice cafe (Hoa cafe) that serves delicious donuts. You can see some more pictures here and here.