I was hiking on the mountain and taking pictures when i observed a spherical object the size of a helicopter. it flew silently and too fast, so i immediately started shooting. while doing this i lost the visual reference of the object. when i returned to look at the sky in search of the first object appeared a second object at the same speed and following the same path. the objects traveled from se to nw at a speed of over 300 km / h, at an altitude of 100m to 200m and at a distance of less than 3km from the observation point.