Arkanar is a fictional planet featured in the science fiction novel "Roadside Picnic" by Arkady and Boris Strugatsky. It is known for its mysterious and dangerous zones filled with strange artifacts left behind by an alien visitation. The planet's environment is harsh, and the local population struggles to understand and exploit the remnants of advanced technology. The story explores themes of human nature, societal development, and the impact of alien encounters on civilization. Arkanar serves as a backdrop for the characters' journeys, highlighting the complexities of knowledge, power, and the unknown in a world shaped by extraterrestrial influence.