Telesforo Bravo Expósito “ The Man,Who Listened To Stones”Telesforo Bravo Expósito was a prestigious scientist,hidrologist, vulcanologist,geologist, naturalist and biologist, who was born in Puerto de La Cruz, Tenerife, on January 5, 1913 and died in the same place on January 7, 2002.He worked as a professor at The University of La Laguna. He had researched animals inhabiting intertidal pools since he was a child before he studied ground urchings,the different microclimates of the island, volcanoes, etc He appreciated the evolution of sea birds and their nests.
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"La Atalaya" is the water gallery located in LaMatanza de Acentejo.It is 4.5 kilometers, 4.500meters. Its entrance is 900m of the surface. Itis located in the bowels of a Volcano.
The water flowing through the side channel ofthe gallery at the height of the dam,which islocated about 4.300 meters from the entrance tothe gallery of " La Atalaya".
The water is clean and clear with little saltcontent and comes from the recharge zone in theupper the forest a few thousand meters higherafter crossing the entire volcanic complex.
Water storage in the basement starts on the surface of volcanicsoils when conditions are suitable for an infiltration, which can varyin its effectiveness, from a zero value, when it is waterproof until
it reaches 80% of precipitation, by example, when the soil is"gravel" or recent volcanic sand, because it is pure fragmented"glass", where the particles of water does not soak and this water
is drained easily if they are not mixed with dust.
Infiltrations are effective in the fields of grass and shrubs in
Midlands,because their roots open the floor and as plant wherethey are born, die, have devices in the trunk to "drain" the air andallow water penetration.
l Water channels and galleries have been drilled since the nineteenthcentury,especially in the area of Anaga and the Orotava Valley to
supply water to the population of Orotava and Puerto de la Cruz citiesand irrigate crops.
l There were 300 galleries in the island,in XX century.About 1,450were drilled in the 80s. 400 wells were exploded much later than thegalleries. The main extractions are Barranco de Vergara Gallery, in
La Guancha Village, with 310.7 hm³ flow and a well called Barrillo ofLieutenant,in La Laguna,with 70.67 million m3.