Traditional stalactites, like on Waterworks, are located on the ceiling and fall down to the ground once broken off through damage.
Gravity is the reason why stalactites must fall from high to low. A stalactite analog, that is capable of falling in any direction, is the Energy Valve.
Similar to how a stalactite on Waterworks could be broken off the ceiling through damage, an Energy Valve can be forced open through damage. The difference is that the beam of energy, that is released upon the valves opening, can travel in any direction including up from the ground or out from a wall.
A damaged Energy Valve, that was forced open, would eventually repair itself, ending the emission of the beam similar to how the effect of a falling stalactite ends once it hits the ground.
Unlike traditional stalactites, the beam released from an open Energy Valve can be redirected through the use of Reflection Joints. A beam that comes out from a wall could travel, hit a reflector and turn 90 degrees around a corner.
Distribution Junctions are similar to Reflection Joints, in that they can cause the beam to change directions, but distributors have the added ability to reflect the beam in multiple directions at once.
Other natural elements like acid geysers, volcanoes, or magma veins could spew damaging liquid from the floor, walls, or ceiling at regular intervals instead of upon taking damage.
