"There is one advantage in their determining to attack us at the western extremity of the town," John Menyn, the merchant at whose house Captain Vere and his party were lodging, remarked when his guest informed him there was no longer any doubt as to the point at which the Spaniards intended to attack, "for they will not be able to blow up our walls with mines in that quarter." "How is that?" Francis Vere asked. "If you can spare half an hour of your time I will show you," the merchant said. "I can spare it now, Von Menyn," Vere replied; "for the information is important, whatever it may be." "I will conduct you there at once. There is no time like the present." "Shall we follow you, sir?" Geoffrey asked his captain. "Yes, come along," Vere replied. "The matter is of interest, and for the life of me I cannot make out what this obstacle can be of which our host speaks." They at once set out. John Menyn led them to a warehouse close to the western wall, and spoke a few words to its owner, who at once took three lanterns from the wall and lighted them, handing one to Vere, another to John Menyn, and taking the other himself; he then unlocked a massive door. A flight of steps leading apparently to a cellar were visible. He led the way down, the two men following, and the boys bringing up the rear. The descent was far deeper than they had expected, and when they reached the bottom they found themselves in a vast arched cellar filled with barrels. From this they proceeded into another, and again into a third. "What are these great magazines?" Francis Vere asked in surprise. "They are wine-cellars, and there are scores similar to those you see. Sluys is the centre of the wine trade of Flanders and Holland, and cellars like these extend right under the wall. All the warehouses along here have similar cellars. This end of the town was the driest, and the soil most easily excavated. That is why the magazines for wines are all clustered here. There is not a foot of ground behind and under the walls at this end that is not similarly occupied, and if the Spaniards try to drive mines to blow up the walls, they will simply break their way into these cellars, where we can meet them and drive them back again." "Excellent!" Francis Vere said. "This will relieve us of the work of countermining, which is always tiresome and dangerous, and would be specially so here, where we should have to dive under that deep moat outside your walls. Now we shall only have to keep a few men on watch in these cellars. They would hear the sound of the Spanish approaching, and we shall be ready to give them a warm reception by the time they break in. Are there communications between these cellars?"