Between the two lockdown periods, I decided to undertake a walk along the RER A train line and turn it into the topic of this dissertation. Why focus on walking for an end-of-degree dissertation? Because it's an essential tool for perceiving space. Through palpable experience, we rediscover the landscape and our relationship to it. A link is therefore created between the walker and the land: through materiality, perception of the senses, colour and light, but also through solitude, boredom, imagination and fatigue. This work was initially created and imagined on the website: https://deneriermanon.wixsite.com/memoire