La Laguna is short for
La Laguna de Castilla. This location can be selected in the list of starting points of the
Camino Frances when one fills in the online form for applying for a Compostela (see below). The list is not ordered in any discernibly systematic way.
Once you have filled in all your data, you press "Create a group" although you can fill in this form only for a single person. It is the only button you can press apart from the button labelled "Go back". The lack of other choices must be the reason why this setup "works".
PS: If you start typing
Lag in the box next to "Starting point", the name will appear. You don't have to scroll down.
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