Grzegorz Gawlik on different continents and in different climates. Among other things, he discovered the highest lakes in the world on the Ojos del Salado volcano and found that the highest active volcano in the world is Llullaillaco. In addition, he explored more than 100 other volcanic sites such as geyser fields, geothermal fields, volcanic caves, volcanic deserts, volcanic plateaus, volcanic craters and cones, volcanic rock formations, lava fields. He climbed to about 100 peaks 4-, 5-, 6- and 7-thousand meters in the Himalayas, Andes, Pamir, Caucasus, Cordillera, High Atlas, Tanzania, Borneo and hundreds of lower peaks. During the expeditions, Gawlik explored
Sierra del Toro Its summits are usually covered in snow in the winter and are among the highest peaks of the Land of Valencia. Therefore there are also numerous ancient ice houses. These mountains have been often devastated by forest fires in hot and dry summers and extensive planting of trees has been undertaken. This mountain range was the scenario of violent battles during the Spanish Civil War (1936–1939) when the fascist troops tried to split the Spanish Republican government territory in two and reach the Mediterranean coast and there are many remains of trenches. Sierra del Toro Sierra del Toro () is