Excerpt from Peña Account of Aguayo Expedition, 1722
0n the sixth of April his lordship began to draw the lines for the presidio,on the site where the French, under command of M. de la Salle had occupied it from 1684 to 1690,... .The hole in which the artillery had been buried and in which the powder had been burnt is within the lines of the new fort and can still be see. On opening the ditch, in order to lay the foundation of the fortification, nails, pieces of gun locks, and fragments of other things used by the French were found. The foundation for the fort... is to be in the shape of an octagon... .
-Juan Antonio de la Peña