The PICO project started when the PICASSO and COUPP groups merged in 2013. The PICO experiment is located in SNOLAB, Canada, in a mine at the depth of 2 km. As of 2018, the PICO collaboration has operated two experiments in SNOLAB: a bubble chamber called PICO-2L and a chamber called PICO-60 (formerly named COUPP-60), where the numbers 2 and 60 refer to the volume (in litres) of the target material in each chamber. The target material used was C3F8. A larger version of the experiment is being planned as of 2018. The larger version would have a target volume of 250-500 litres (and called PICO-250 or PICO-500, respectively). The construction of the PICO-500 experiment is expected to start in 2019.