What is the fine-grained topic of the following text: 60 Hikes inside 60 Miles: Portland profiles 60 decide on trails that supply outdoors adventurers a bit of every little thing there's to take pleasure in round Portland: mountain perspectives, woodland solitude, picturesque streams, strenuous exercises, informal strolls, interesting heritage, fields of vegetation, outstanding waterfalls, and ocean shorelines. Only return the topic.
Hiking trail guide for Portland area