An active mud pit is a reservoir or container used in drilling operations to hold and circulate drilling mud, a mixture of fluids and solids used to lubricate and cool the drill bit, carry rock cuttings to the surface, and maintain pressure in the wellbore. The mud pit is considered active when the drilling mud is actively circulating through it, and it plays an important role in the drilling process by providing a means of controlling the pressure and temperature of the wellbore, as well as helping to prevent blowouts and other hazards. The mud pit may be located onshore or offshore, and may be designed to hold varying amounts of drilling mud depending on the size and depth of the well being drilled.