The Past and Future 20-Years Endeavor for Discovering Origins of Ultra-High Energy Cosmic Rays – Rapporteur's Summary of Cosmic Ray Indirect –

This article is the rapporteur's summary of the cosmic ray indirect sessionsof the 38th International Cosmic Ray Conference in Nagoya, Japan. Therapporteur highlights cosmic ray indirect observatories around the world, andreviews a selection of the latest results regarding the cosmic ray energyspectrum, mass composition, anisotropy, hadronic interaction models, theory,geophysics, interdisciplinary research, and future projects.