Paleodem team deeply regrets the untimely death of our dear colleague and friend Mario Gutierrez Roig. PhD in Physics by the University of Barcelona, he was currently working as a Lecturer in Data Science at University of Essex. He started his postdoctoral career working with us at IPHES and actively collaborated in the first steps of Paleodem project. He has a brilliant mind and a strong commitment to the work. But most of all, his human touch, kindness, friendship and sense of humour will remain forever in our memory. We will miss you, Mario.