1. The Lost City, also known as Ciudad Perdida, is an ancient archaeological site located in the Sierra Nevada de Santa Marta mountains in Colombia. It is believed to have been founded around 800 AD by the Tairona civilization and was abandoned during the Spanish conquest in the 16th century. The city was hidden for centuries and only rediscovered in 1972.

The Lost City is considered one of the most important archaeological sites in South America. It consists of terraces, plazas, and stone paths that were once inhabited by the Tairona people. The site is surrounded by lush jungle and offers stunning views of the surrounding mountains.

Visiting the Lost City is often done through multi-day treks, as the site is located deep within the jungle. The trek can be physically challenging and requires a reasonable level of fitness. Along the way, visitors will encounter rivers, waterfalls, and indigenous communities.

2. The Lost City can only be visited with an authorized tour operator. The trek usually takes 4-6 days, depending on the itinerary chosen. The tours typically include all meals, accommodations (usually in basic jungle huts or campsites), and a knowledgeable guide.

It is recommended to book the tour in advance, especially during high season (December to February and July to August). Most tour operators can be contacted online or through travel agencies in Santa Marta. It is best to check with them for specific details on working times and contact information.

3. The cost of the tour to the Lost City varies depending on the tour operator and the length of the trek. Prices generally range from $250 to $400, including all meals and accommodations. It is advisable to bring additional cash for tips and personal expenses.

Transportation to the starting point of the trek is typically provided by the tour operator. The journey usually begins with a 2-3 hour drive from Santa Marta to the small town of El Mamey, where the trek begins. After the trek, transportation back to Santa Marta is also included.