1 Introduction

2 The Data  
2.1 Point Source Catalog Observed with IRSF/SIRIUS  
2.2 Gas Tracer  
2.3 Dust Emission  

3 Method  
3.1 Derivation of Dust Distribution along the Line of Sight  
3.2 Decomposition of Dust Extinction into Different Velocities  

4 Result  
4.1 Cumulative Dust Extinction Map over the LMC  
4.2 Cumulative Dust Extinction toward Individual Star Forming Regions  
4.3 Dust Geometry for the Diffuse L-com Region  

5 Discussion  
5.1 Dust Geometry of Individual Star Forming Regions  
5.2 Origin of Massive Star Forming Region  

6 Conclusion