The border between Costa Rica and Panama is 348 km (216 mi) long. The border in its present state is demarcated by the Echandi-Fernandez Treaty of 1941.
The border between the two countries runs between the Pacific and Caribbean coasts, through the Cordillera Central. The Echandi-Fernandez Treaty defined the current border as follows:
Naso Tjër Di (meaning “I am from the grandmother's river") is a landlocked indigenous region of Panama, located in the extreme northwest of the country, on the banks of the Teribe River and adjacent to the border between Costa Rica and Panama. The region is inhabited mainly by the Naso ethnic group, which is made up of about 5000 people.
It was created on December 4, 2020 from parts of Changuinola, and has an area of 1,606.16 square kilometres (620.14 sq mi), of which 1468.63 km (91% of the territory) are protected areas of the La Amistad International Park and the Palo Seco Forest Reserve.
Bocas del Toro (Spanish pronunciation: [ˈbokas ðel ˈtoɾo]; meaning "Mouths of the Bull") is a province of Panama. Its area is 4,643.9 square kilometers, comprising the mainland and nine main islands. The province consists of the Bocas del Toro Archipelago, Bahía Almirante (Almirante Bay), Chiriquí Lagoon, and adjacent mainland. The capital is the city of Bocas del Toro (or Bocas Town) on Isla Colón (Colón Island). Other major cities or towns include Almirante and Changuinola. The province has a population of 159,228 as of 2023.
Christopher Columbus and his crew first visited the area in 1502. Bocas del Toro borders the Caribbean Sea to the north, Limón Province of Costa Rica and the Naso Tjër Di Comarca to the west, Chiriquí Province to the south, and Ngöbe-Buglé Comarca to the east. The Río Sixaola forms part of the border with Costa Rica. A newly constructed bridge spans the river between Guabito and Sixaola, Costa Rica. The bridge is a border crossing used by tourists going between destinations in Bocas del Toro and Costa Rica.
View the full Wikipedia page for Bocas del Toro Province