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Many attempts to determine the nature of dark matter assume that a single elementary particle is responsible for this unknown phenomenon. Results from direct detection, indirect signatures, and collider searches all place strong bounds on this explanation.
Therefore, there has been a surge of interest in "hidden valley" models with new, dark forces, separate from the standard model of particle physics. If the dark force is similar to the standard strong force, the outcome would be composite dark matter in the form of "dark hadrons". These models provide unique signatures that would evade the existing bounds on elementary dark matter.
We will focus on the status and prospects of collider searches for the most difficult signature, semivisible jets containing both visible particles and invisible dark hadrons.