Dwarven Roundabout

Dwarves are an insular group.  At times they focus too much on crafting and mining that their clan can behing to have too much inbreeding, not enough fresh air and fresh foods that they can suffer from a condition known as Deep Stock Syndrome.

To combat this trend, many clans use Roundabout.  It is either a formal or informal process of selecting which youth are sent out of the mountains.  For some groups, it is to grow future leaders and give them experience with the ways of the world, form alliances and trade routes as well as bring back mates to diversify the bloodlines.

For others it is a tactical move to expell the weak (or strong if potential political rivals.) Possibly to send out spies and saboteurs to retain dominance.  For very insular groups, those that return are often treated with suspicion and may find themselves victims of a purge if they are too good at their work.