The Studentenstam De Delftsche Zwervers (Delft Rovers Student Crew) is a student society in Delft, Netherlands. Dating from 1915, it is the world's oldest student Scouting group, first as a club for former Scouts, from 1920 as a Rover crew. They are housed in the Scout Centre "Kruithuis", the monumental gunpowder ammunition dump of the Dutch Republic, designed in 1660 by Pieter Post.