White Crater is a surreal volcanic lake with milky turquoise water and strong sulfur fumes, so expect cool, foggy conditions and a persistent egg-like smell; bring a warm layer, a face mask or scarf if you are sensitive to fumes, and closed shoes for uneven or slippery paths. It is commonly done as a half-day trip from Bandung via a steep, winding road, you will pay a modest park fee and park near the rim before strolling short boardwalks to viewpoints. Stay on marked paths, do not touch or swim in the water, and move away if the vapors feel strong. Arrive early to avoid tour buses and to get clearer views and better light for photos, and consider combining the visit with nearby tea plantations or hot springs.