[1][2][3] The book is based on self-propelled wilderness expeditions Wolf has undertaken in North America, Scandinavia, and Asia.

Some of the stories covered in the chapters include: two friends on a cycling and volcano-climbing odyssey across Java, the most populous island in the world’s most populous Muslim country, Indonesia, in the wake of 9/11; a surreal private lunch with former Prime Minister Pierre Trudeau during an 8000 km canoe journey across Canada; discovering the past and present on a 900 km hiking and kayaking journey from Skagway, Alaska, to Dawson City, Yukon; negotiating the cultural divide during a whitewater paddling expedition in Laos and Cambodia with Russian extreme kayakers; exploring the nature and politics of the Enbridge Northern Gateway Pipelines in northern BC by hiking, biking and kayaking the GPS track of the proposed project route from the oil sands to the British Columbia coast; conducting a mammal tracking survey in the course of a 120 km ski traverse of Banff National Park; discovering the truth about the existence of Sasquatch in northern Ontario; retracing Viking history during a canoe trip across Scandinavia.

From the publisher", Wolf weaves together humour, drama and local knowledge to transport readers to some of the outermost corners of the globe in an epic quest to celebrate the freedom to move, explore and be wild.

Lines On A Map is written with self-aware humour, high-stakes survivalist drama and a frank awareness of our fragile, beautiful planet".

From the review by Nick Walker, managing editor of Canadian Geographic writing: "...a gripping montage of his quests, body-breaking travails and the humour that gets him through".