Ключевые слова: alto de guarramillas, bola del mundo, guadarrama, guadarrama mountains, landscape, madrid, mountain, nature, navacerrada, navacerrada mountain pass, people, piste, puerto de navacerrada, resort, season, seasonal, sierra de guadarrama, ski, ski piste, ski resort, ski run, ski slope, ski track, skiing track, sled, sleigh, snow, snow capped, snowcapped, snowcovered, snowy, spain, sport, tourism, tourists, winter, winter sport,