There is the possibility to make the silently hovering craft without any SciFi technology.

Cooling the exhaust gas and closing the sound in the whirl makes it possible to create silent rockets and jet planes. 

When we are thinking of the possibility to make the craft that is hovering silently over the ground. We can simply make the rocket- or jet engine system where the jet is closed in the sonic whirl or the LRAD system will close the exhaust gas inside the pressure wall. In that case, the sound of the exhaust gas cannot get out from that sound wall. And that thing makes it possible that people cannot just hear any sound when they are outside that sound wall. 

The thing that explains why there is no burning effect in the grass. Would be that the exhaust gas will be cooled by using super cold water or gas like liquid nitrogen for cooling that gas. The thing is that by using this kind of system the craft can hover silently over the ground. This kind of virtual antigravitation system can be already in use. 

Closing sound in the sonic whirl or some kind of sound barrier that is made by using the LRAD-system would open a new era of rocketry and aviation. That thing would deny people hearing the noise of the aircraft or rockets. And if the exhaust gas of the rocket engines will be cooled by using liquid gas or Bose-Einstein condensate that thing allows that rockets or aircraft can operate even from the football field. Cooling the exhaust gas of the rocket would make the operations safer. 

And that thing denies things like fire around the rocket base. This kind of simple system what are basing the cooling element can allow. That the VTOL-aircraft can operate from all platforms. This kind of system might be already in use by the special rescue crews which mission is to return the dropped recon planes from the enemy territory. 

https://en.wikipedia.org/wiki/Long_Range_Acoustic_Device

https://visionsofbrightfuture.blogspot.com/

South pole and science (The Antarctean pyramids part II)

South pole and science  (The Antarctean pyramids part II)

The south pole and its pyramids are a mysterious place, where no civilian has ever visited. That means that there are many theories rumors about the existence of the secret military bases or even alien space centers below the ice, what is formed in millions of years. The cold temperature could help to store biological material like sperm and cells in that place. And maybe some expeditions are connected with that kind of things.

When we are thinking about the pyramid-shaped structures, the thing is that the British Antarctic Expedition has first observed those objects in 1910-1913, and after that, there has been claiming that those "pyramids" might be made by something, what is not natural. But the thing is that the Robert Falcon Scott's disaster at Antarctean ice took every notice in the press, and those "pyramids" remains backward.

In 1938 German "Ahnenerbe" institute send the research team to Antarctica, and that thing was so ideologically polarized, that the research results had the secondary object. Also, the Second World War, which began in 1939 left this expedition to the shadows. And as you might realize, the Nazi-scientists expeditions were a politically sensitive thing after WWII, which means that the thing, why Germans visited in Antarctica was forgotten.

The reason was probably rather researching the possibility to create U-boat and probably also airbase in that area, what could support the operations at the Southern Atlantic and Pacific. The British expeditionists had similar motives when they left to Antarctica in 1910 because if they could make the naval base in Antarctica, that would solve the problems with spies and rebels, what could cause troubles in Kap Town naval base.

The Boer War caused the need to begin research for creating the new naval base in the south, and if British could make their base to  Antarctica, that base would deny attempts to spy the new warships, and rebels would not influence to that base, what would stay away from other people. That base would secure the operations in the Indian ocean,  and give great support for the British fleet and military, what ruled the world.

Same way Germans could support their U-boats in that area. But when we are thinking about the location of Antarctica and it's role as the coldest place on Earth, we must realize that Antarctica would be the perfect place for experiments, what wanted to keep secrecy. The ice cap would give a perfect place for making tunnels simply by using torches.

Maybe Elon Musk would be interested in this kind of ideas. Antarctica would be the perfect place for rocket research.

Maybe somebody has given an idea that the base itself could be in the inner lands of Antarctica and then the equipment would send to the seas by using channels or the rivers, what are flowing under the ice. But if we think carefully the rockets could assembly in that place, and then driven to sea for launching, but this thing is only the game with thoughts.

The rocket could connect to midget submarine, what would pull them to sea, and that system might be equipped with the electrolysis system, what could be used for creating the liquid oxygen and hydrogen from the water. And when the tanks are filled, the rocket must only rise it's forehead to the skies.