Randy Morgenson was raised in the Yosemite Valley in the 1950s, where his parents both worked. His father was an avid naturalist, photographer and later tour guide. Of all the places in the world to grow up in, Yosemite must be one of the most fabulous, spectacular and awe-inspiring places to be.

It is therefore no surprise that Randy became a park ranger as soon as he was old enough to serve. He loved the Sierras, the mountains, nature, solitude and serenity. He was the quintessential ranger.

Being a backcountry ranger means getting flown out into the wilderness in the spring by helicopter with supplies, and getting picked up again the fall. I have hiked in the Sierras, so I know its remoteness, its beauty, and – of course – its challenges. In the High Sierras of California, there is still true wilderness. There are places where no human steps for years. This means there is solitude where one can reflect and regain the natural connection to Mother Earth. But there are also dangers everywhere. Most people think of bears and mountain lions, and yes, they are there, but very few people ever see any of them. The true dangers are getting lost without food, water or shelter, being exposed to the sometimes violent and hostile elements at high altitudes with no chance of anyone coming by to help. Or falling in an avalanche, or slipping on an ice field, or stumbling off a cliff, or drowning in a meltwater-swollen creek.

Backcountry rangers are there to assist hikers with advice, or with emergency services, if needed.

The problem for the rangers is that it’s a seasonal job. There is no work to be done in the winter. So who can afford a lifestyle to go away into the mountains every summer at low pay, and then come back in the winter and do something else for gainful employment. Not only is it largely impossible, it’s also hard on relationships or a marriage.

Randy and his wife Judi didn’t have children, exactly for that reason. But over the years, Randy’s love for the mountains eclipsed his relationship with Judi and cracks started to appear in the fabric of their marriage. As the seasons went by, Randy became more and more disillusioned with his life when he was not in the mountains.

The Last Season chronicles Randy’s life and his experiences and reputation as a backcountry ranger over decades. When, one day, Randy doesn’t check in on the radio like he is supposed to, the reader participates in the massive search and rescue effort for Randy launched by the park service.

The Last Season is a riveting book about people who do what they absolutely love to do, and how they live, and die.