When do you use a gravel bike? what's it for?
There are currently almost as many definitions of gravel riding as there are gravel riders, but most would agree on the fact that gravel riding is a more relaxed style of cycling, without clubs and federations, and with fewer rules. The bikes' versatility means they're equally at home going down cute country lanes as they are on gravel trails, dirt tracks and byways. It's therefore a much more fun, varied sport that's super enjoyable no matter how experienced you are.
It has a road bike in its DNA, so the idea of speed is important, as well as being lightweight. But you can use it on plenty more types of terrains from cobbled stones, in the mud, on trails, forest paths...