The indelible memory was forged when the wolves howled back.
The moment came as part of a trip Beverly Rogers was taking with her 10-year-old grandson, Sterling. The pair had traveled from their home in Virginia to the International Wolf Center in Ely, Minn. During their six-day vacation, offered through the adventure travel nonprofit Road Scholar, they had observed nesting bald eagles, hiked to a beaver pond and learned about radio collars tracking the wolf population.
Then, on a starlit summer night, they hiked into the Superior National Forest with a guide who threw back his head back and mimicked the baying call of the wolves.
From deep in the woods, the pack responded in kind.
"This was rare and special," said Rogers, 77, a retired civilian employee of the Army. "It was great to watch your grandchild be exposed to this kind of experience."
More grandparents and grandchildren are discovering the joys of being on the road together. Intergenerational trips, known as "grandtravel" in the industry, are experiencing a sharp increase, with resorts offering special packages, travel agencies booking trips, church camps designating grandparent-grandchild weeks, and some grandparents taking a do-it-yourself approach.
The trend is driven by baby boomers who are redefining grandparenting, said Rebecca Kolls, senior analyst for consumer advisory firm CEB Iconoculture, now part of Gartner.
"They want to instill their values into the next generation; they want to live their legacy, not just leave their estate to their kids and grandkids," said Kolls. "What better way to do that than with time away together? And many of them can afford these vacations."