The first salt exploitations are attested from Roman times, but the mine in Praid is documented from 1200, and the intensive exploitation is made from 1700. The Romans worked only on the surface, in patrol pits, up to a depth of 12-15 m, from where the salt could be easily removed on slippery decks and with simple lifting devices, after which they left it and started another. This is how the Romans extracted salt everywhere in Transylvania, and the abandoned excavations became lakes. Following the extraction of the salt, large underground voids were formed, where a saline microclimate was...

The first salt exploitations are attested from Roman times, but the mine in Praid is documented from 1200, and the intensive exploitation is made from 1700. The Romans worked only on the surface, in patrol pits, up to a depth of 12-15 m, from where the salt could be easily removed on slippery decks and with simple lifting devices, after which they left it and started another. This is how the Romans extracted salt everywhere in Transylvania, and the abandoned excavations became lakes. Following the extraction of the salt, large underground voids were formed, where a saline microclimate was identified, with relatively constant temperatures, between 14-16 C, low humidity 66-70% and atmospheric pressure higher than the surface, in average 735-738 mmHg. The air is highly ionized, particularly effective in treating respiratory conditions. The treatment base, located on the "horizon 50", at a depth of 120 m, has a width of 20 m, a height of 14 m and a length of several hundred meters. At a distance of 1250 m from the entrance to the saline to the treatment base, the transport of the persons is made by saline buses. [3]The saline is equipped with recreational spaces, children's playgrounds, restaurant, toilets, chapel for prayer, internet cafe and a museum that presents the methods of salt extraction from the oldest times until today. In the Praid saline, there is an underground caving- and climatotherapeutic treatment, as a simple and effective method of improving the condition of the patients suffering from airway diseases, maintaining and restoring the soul balance and the tone of the vegetative nervous system. In 2009, Praid was the most visited salt mine in Romania, with more than 200,000 tourists annually, followed by Slănic Prahova , with over 150,000 tourists and Salina Târgu Ocna and Salina Cacica. The treatment of speleotherapy and climatotherapy includes practically the inhalation of air from the mine, being very useful in the case of respiratory diseases (asthmatic, bronchitis and allergic diseases). The treatment duration is 18 days. This underground treatment takes place on the horizon "50", located at a depth of 120m from the surface. During the time spent underground it is also recommended gymnastics led by a specialized framework, walks and dosing of physical effort. The age range between which people can be treated is between 2-60 years, which are permanently supervised by a medical staff. According to the statistics of the specialized doctor in the commune it can be observed that in the case of those who return to treatment 3-4 times and react positively, decreases the number and intensity of asthma attacks and increases the body's resistance capacity. Famous for the healing effects that salt air has on the body, the mine looks like a small town located 120 meters deep in the heart of the mountain. Not everyone comes to Praid for treatment, but many are attracted to the beauty of a mine that has been a tourist destination for over 35 years. The beauty and the unique attract tourists from all over Europe. Every morning the area from the entrance to the mine is animated suddenly. The patients arrived at the treatment, but also the tourists crowd in the buses that descend a kilometer and a half into the heart of the earth. After the bus trip, access is made on foot, 250 steep steps being a test of endurance especially for the elderly. Once in the saline, they all forget the effort and integrate as a huge puzzle board in the set up area. Equipped with hundreds of wooden tables and sofas, buffet, many children's playgrounds, a small wooden church, billiard tables and even an internet cafe, the underground rooms receive up to 3,000 visitors per day. . Tourists, but also patients, come to treat their respiratory diseases, such as asthmatic, bronchitis and allergic diseases. Also, the Praid salt mine is also the location with the first adventure park in Europe (Club Aventura), located in a salt mine. Also Club Aventura is the first adventure park in Romania, which combines the routes with elements between pillars up to 15 meters high and the paths on the salt rock. Equipped with hundreds of wooden tables and sofas, buffet, many children's playgrounds, a small wooden church, billiard tables and even an internet cafe, the underground rooms receive up to 3,000 visitors per day. . Tourists, but also patients, come to treat their respiratory diseases, such as asthmatic, bronchitis and allergic diseases. Also, the Praid salt mine is also the location with the first adventure park in Europe (Club Aventura), located in a salt mine. Also Club Aventura is the first adventure park in Romania, which combines the routes with elements between pillars up to 15 meters high and the paths on the salt rock. Equipped with hundreds of wooden tables and sofas, buffet, many children's playgrounds, a small wooden church, billiard tables and even an internet cafe, the underground rooms receive up to 3,000 visitors per day. . Tourists, but also patients, come to treat their respiratory diseases, such as asthmatic, bronchitis and allergic diseases. Also, the Praid salt mine is also the location with the first adventure park in Europe (Club Aventura), located in a salt mine. Also Club Aventura is the first adventure park in Romania, which combines the routes with elements between pillars up to 15 meters high and the paths on the salt rock. Tourists, but also patients, come to treat their respiratory diseases, such as asthmatic, bronchitis and allergic diseases. Also, the Praid salt mine is also the location with the first adventure park in Europe (Club Aventura), located in a salt mine. Also Club Aventura is the first adventure park in Romania, which combines the routes with elements between pillars up to 15 meters high and the paths on the rock of salt. Tourists, but also patients, come to treat their respiratory diseases, such as asthmatic, bronchitis and allergic diseases. Also, the Praid salt mine is also the location with the first adventure park in Europe (Club Aventura), located in a salt mine. Also Club Aventura is the first adventure park in Romania, which combines the routes with elements between pillars up to 15 meters high and the paths on the rock of salt.