Gravel is so 2015 :). The new hotness is the re-emergence of the the ATB (“all terrain bicycle” or “alternative terrain bicycle” depending on your levels of sarcasm), a multi purpose and multi terrain bike. In this video, I give a quick working definition of the ATB and compare 4 bikes which I think fit the bill: Velo-Orange Piolet, Ritchey Ascent, Rivendell Susie Longbolts, Tanglefoot Hardtack.