A Group Exhibition Exploring What Lies Beyond. A keyhole is a threshold. It offers a glimpse of something hidden, a passage into somewhere unknown, or a view into a story that has yet to unfold. They invite artists to submit work for “Keyhole,” a group exhibition exploring the many meanings of the keyhole—literal, symbolic, psychological, mysterious, intimate, or surreal. Emerging and established artists are encouraged to apply. Memento Mori Gallery & Tattoo is a lowbrow contemporary art gallery & private tattoo studio located in the 40West Arts District in Lakewood, Colorado, just 15 minutes from downtown Denver. They are in the same shopping center as Casa Bonita.