It is possible to find wild olive trees, or Olea lapperrini. Endemic and rare species include the Saharan Cypress (“tarout”) (Cupressus dupreziana) and Saharan Myrtle (Myrtus nivellei), both of which are relict Saharan-Mediterranean species. Olive and myrtle trees grow at the bottom of wadis, intermittent stream valleys, or beside gueltas and permanent or temporary waterholes.[1]