Landes, or Lanas in Gascon, means moorland or heath.
Landes and Lanas come from the Latin plānus meaning “‘flat, even, level, plain’”. They are therefore cognate with the English plain (and plane), the Spanish word llanos and the Italian word piano.
This disambiguation page lists articles associated with the title Landes. If an internal link led you here, you may wish to change the link to point directly to the intended article.