\emph{Trinity}: An air-shower imaging instrument to detect ultrahigh-energy neutrinos

The detection of TeV-PeV neutrinos with IceCube has cracked open a new window in astrophysics. The revelation of a relatively hard spectrum and the unknown origin of the neutrino flux are two motivations to extend neutrino measurements to even higher energies, namely the ultrahigh-energy (UHE) regime above $10^7$\,GeV. The seemingly preferred way to search for UHE neutrinos nowadays is with radio detectors employed in ice (e.g.~ARA and ARIANNA), on balloons (ANITA), or by pointing antennas at mountainous terrain (GRAND). In this talk, I show that a system of imaging detectors can also be a viable UHE neutrino detector if designed right. Based on these design considerations I present \emph{Trinity}, a system of six Cherenkov telescopes. I discuss the sensitivity of the system, how it can be built, address operational constraints, and plans to test the concept.