  Investigating the extinction law in regions of high dust extinction, such as
the Pillars of Creation within the M16 region, is crucial for understanding the
densest parts of the interstellar medium (ISM). In this study, we utilize
observations from the Near-Infrared Camera (NIRCam) and the Mid-Infrared
Instrument (MIRI) onboard the James Webb Space Telescope (JWST) to analyze the
color-excess ratios $E(F090W-\lambda)/E(F090W-F200W)$ across a wavelength range
of $0.9-7.7\,\mu\mathrm{m}$. Our method involves performing linear regression
on color-color diagrams to derive these ratios. The enhanced detection
capabilities of JWST data allow us to probe the distinct extinction law to the
densest regions in M16 corresponding to an extinction depth up to $A_V \sim
60$\,mag. Remarkably, the resultant color-excess ratio curve exhibits a flatter
profile than predicted by typical dust extinction models with $R_V = 5.5$ for
dense ISM environments. Moreover, we observe that the mid-infrared (MIR)
extinction law diverges from the near-infrared (NIR) power-law, showing a
tendency for the slope to flatten as the wavelength increases. These findings
have significant implications for our understanding of the dust properties in
dense interstellar environments.
