Cave

A cave or cavern is a hollow place in the ground, especially a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos.

Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.

Types and formation

The formation and development of caves is known as speleogenesis. Caves are formed by various geologic processes and can be variable sizes. These may involve a combination of chemical processes, erosion from water, tectonic forces, microorganisms, pressure, and atmospheric influences.

It is estimated that the maximum depth of a cave cannot be more than 3,000 metres (9,800 ft) due to the pressure of overlying rocks. For karst caves the maximum depth is determined on the basis of the lower limit of karst forming processes, coinciding with the base of the soluble carbonate rocks.

Don't Starve

Don't Starve is a 2013 action-adventure video game with survival and roguelike elements, developed and published by the Canadian indie company Klei Entertainment. The game was initially released via Valve's Steam software for Microsoft Windows, OS X, and Linux on April 23, 2013. A PlayStation 4 port became available the following year (with PlayStation Vita and PlayStation 3 versions released on September 2014 and June 2015 respectively), and further versions for Xbox One, iOS and mobile phones are under consideration.Downloadable content titled Reign of Giants was released on April 30, 2014, and a multiplayer expansion called Don't Starve Together became free for existing users on June 3, 2015.

The game follows a scientist named Wilson who finds himself in a dark, dreary world and must survive as long as possible. Toward this end, the player must keep Wilson healthy, fed, and mentally stable as he avoids a variety of surreal and supernatural enemies that will try to kill and devour him. The game's "Adventure" mode adds depth to the sparse plot and pits Wilson against the game's antagonist, Maxwell.