Sajama National Park in Bolivia is a remote, high-altitude Andean destination best explored via a guided tour, though experienced travelers with 4x4 access might venture solo; acclimatization to altitudes exceeding 4,200m is crucial. Optimal visiting months are May to October during the dry season, which offers clearer skies and more accessible roads, though nights can be very cold. Visitors typically spend 2-4 days exploring its unique geysers, hot springs, ancient qiñua forests, and abundant wildlife like vicuñas, with park entrance fees being modest (around $15-20 USD for foreigners) but multi-day guided tours from La Paz ranging from $100-300+ USD per person depending on services. Essential insights include bringing warm layers, sun protection, and preparing for basic amenities, all set against the backdrop of Bolivia's highest peak, Nevado Sajama.