The structure formation in the interstellar medium is an outcome of interplay among many physical mechanisms. Most importantly, the gravity leads to the collapse and enhancement of density, that finally results in star formation. Due to the development of instabilities in the diffuse interstellar medium, sheet-like structures often develop first, which are followed by filamentary structures, in which prestellar cores form. Monoceros R2 is a well- known hub-filament star-forming region. It has been suggested to situate within a plane inclined by 30 degrees with respect to the line of sight (Treviño-Morales et al. 2019). The thickness however, set by an equilibrium between the gravity and thermal/non-thermal supports, cannot be measured directly from observation. We will use the kinematic observation data of this region and statistical tools to infer the thickness of the system.