https://www.amazon.com/gp/product/B004Z3HYDO/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

This light works great for hole hunting in california. Pretty bright, compact, and durable. It's perfect for looking under boulders and in caves.

I have this one and it’s super bright. I have a few other more expensive ones but not nearly as bright. $75 but well worth it.

Underwater Kinetics SL4 eLED L1 Dive Light - Safety Yellow, with wrist strap https://www.amazon.com/dp/B004Z3HYDO/ref=cm_sw_r_cp_api_i_O6mdBbBV61WDK