From the box:

Kids take a hike through the forest in a race to fill their backpacks and reach Camp Fun. Players choose which animals they want to collect, then move around the board collecting those animals. The animals stick to the backpacks, then peel off so that they can be used over and over again. Take-a-Hike! is simple enough so that 4 year olds, can quickly learn to play, but interesting enough to hold older kids' attention, too.

This was designed by a five year old, Derek Nelson, the winner of the 1994 National Young Game Inventors contest.