Among the existing caves from the upper basin of Bega River, the Romanesti Cave is the largest and most interesting. It is located on south-east from Romanesti village (Tomesti commune, Timis county), on the left bank, well forested, of Pustinia valley, at 2.2 km upstream of the confluence of this creek with Bega Poieni. More precisely, it is broken in the north bank of Filip Hill, referred to as Dosu Pesterii, at 370 m altitude. From Romanesti village, there are two access paths: one on the Farasesti road, which follows Bega Poieni up to the confluence with Pustinii Valley, then on this valley, until close to a chalk quarry (4 km), where it ascends on the left bank, following a steep slope path until entry, and the other following the village road next to the old wood church (one hour to walk).

In Romanesti, one can reach following the Lugoj-Deva road, entering by Cosava (traffic road) or stopping at Margina, from where one can follow the road leading to Voislova.

As the history is concerned, the first geological and fauna surveys are made by T. Orthmazr (1872). In 1963, the cave is subject to some complex modern research and the cavity plan is drafted (Şt.Negrea, A.Negrea, V.Sencu and L.Botoşăneanu, 1965).

If we would describe the interior, the galleries accessible to tourists amount 340 m and are developed horizontally on tectonic cracks through which infiltration waters have circulated in the past. The first part is broken in grey or white-yellowish dolomitic chalk, and the rest in a tectonic breccia (unique case in Romania). The entry of 9.5 m width and 2 m height allows for the light to enter up to 70 m. The main gallery is almost straight, of large sizes, with widening at the intersection of the tectonic fissures, the largest being Bat Hall (Sala Liliecilor).

On the walls and ceiling, especially in the terminal part, there are hieroglyphics by corrosion, corrosion septa and pillars, and in many places decalcification clay arranged as "leopard skin" attracting the visitors. It being in an inception phase of concretion, the cave contains a few fistulous stalactites, quite varied parietal leaks, stalagmite crust with stalagmites and cavern pearls, stalagmites and columns and domes (one of 7m, called Tibia and Fibula, fractured due to displacement of the floor).

The excavations of the specialists revealed cavern bear bones and objects coming from a neolithic settlement: a cereal deposit, ceramic belonging to Tisa and Cotofeni cultures, as also a hearth now reconditioned and exhibited in the Timisoara museum, where also the cavern bear remains are kept.

The wide opening of the Bat Hall made for the Romanesti cave to meet a a lot of the conditions for its own show room, among which acoustic ones, which are of a high importance. Initiated by C. Lupu, the cultural-artistic manifestations performed in this cave enjoy from a high appreciation among the public.

In a beautiful autumn, on 27 September 1984, Romania was living one of the most beautiful cultural achievements. The first symphonic concert in a cave from within the Carpathians has impressed the souls of 600 participants. Speologists and quests entered with wonder in the hall lighten with candles, bulbs and electric reflectors. After the sounding success of the concern, each year, by the efforts of Mr. Lupu Constantin and of the Timisoara cultural authorities, such a symphonic concern is organised. Romania is one of the few countries that organise spelean symphonic concerts. In the concerts performed until now, unforgettable moments were created by works signed by: W.A.Mozart, D. Sostacovici, B. Marcello, A. Vivaldi and G. Enescu.

The concerts were performed by various bands, such as: The Danish Royal Philharmonic Orchestra, the Symphonic Orchestra from Vienna, the Brass Company from Rome, "Banatul" Philharmonic from Timisoara, the Arad State Philharmonic, The Sabin Dragoi Choir from Timisoara, The Symphonic Orchestra of the Timisoara Faculty of Music, the Orchestra of the Music High-School "Ion Vidu" Timisoara and other renowned orchestras. Next to the aforementioned orchestras, renowned vocalists and directors performed in the previous editions of the concerts from the Romanesti Cave.

In the last year, the Classical Brass Band Orchestra from Timisoara, directed by a renowned German director, fascinated with a superb program, with parts signed by Mozart, Johann Strauss, Beethowen, Schubert and other renowned composers.

A rock with a large extension, which is economically valued, is the chalk, used both as construction rock and to obtain lime. On the territory of the studied area, 5 chalk quarries are activated, close to the localities Româneşti, Baloşeşti, Colonia Fabricii, Luncanii de Jos and Pietroasa. The burning of chalk to produce lime was made in the furnaces built in Tomesti and Romanesti. Today, the chalk quarries exist by the furnaces are not used.

Next to the Romanesti cave, not far from it in the perimeter of Pietroasa commune, we meet the „Pietroasa cave”, particular by the "Pietroasa blue" existing in the composition of the constituting rocks.