Levasseur, fearing perhaps another descent of the Spaniards, lost no time in putting the settlement in a state of defence. Although the port of Tortuga was little more than a roadstead, it offered a good anchorage on a bottom of fine sand, the approaches to which were easily defended by a hill or promontory overlooking the harbour. The top of this hill, situated 500 or 600 paces from the shore, was a level platform, and upon it rose a steep rock some 30 feet high. Nine or ten paces from the base of the rock gushed forth a perennial fountain of fresh water. The new governor quickly made the most of these natural advantages. The platform he shaped into terraces, with means for accommodating several hundred men. On the top of the rock he built a house for himself, as well as a magazine, and mounted a battery of two guns. The only access to the rock was by a narrow approach, up half of which steps were cut in the stone, the rest of the ascent being by means of an iron ladder which could easily be raised and lowered.[99] This little fortress, in which the governor could repose with a feeling of entire security, he euphuistically called his "dove-cote." The dove-cote was not finished any too soon, for the Spaniards of San Domingo in 1643 determined to destroy this rising power in their neighbourhood, and sent against Levasseur a force of 500 or 600 men. When they tried to land within a half gunshot of the shore, however, they were greeted with a discharge of artillery from the fort, which sank one of the vessels and forced the rest to retire. The Spaniards withdrew to a place two leagues to leeward, where they succeeded in disembarking, but fell into an ambush laid by Levasseur, lost, according to the French accounts, between 100 and 200 men, and fled to their ships and back to Hispaniola. With this victory the reputation of Levasseur spread far and wide throughout the islands, and for ten years the Spaniards made no further attempt to dislodge the French settlement.[100]