Lithophone:
The closing moments of the film feature a performance of lithophones, sculpted sections of rock that produce wonderful sounds and harmonics when they are hit by another, smaller rock – and put me in a meditative mood. Having also heard how stars are born and revelling in cosmic dust, I was feeling spaced-out. [“Celebrating dark skies at a festival in deepest Denmark,” Alex Wilkins, NewScientist (6 January 2023, paywall)]
For the curious: