Xtierra Inc. is a mineral exploration and development company. The Company is engaged in exploration and evaluation properties located in Mexico. The Company operates through segments, which include Canada and Mexico. The Company focuses on the development of precious and base metal projects. It holds mineral properties located in the Central Silver Belt of Mexico in the State of Zacatecas. It holds interest in the Bilbao zinc-silver-lead-copper project located approximately 500 kilometers northwest of Mexico City in the southeastern part of the State of Zacatecas. The Bilbao Project is a polymetallic sulfide and oxide replacement silver-lead-zinc-copper deposit. It holds interest in La Laguna silver-gold tailings project in Zacatecas, which consists of tailings solids derived from mine processing wastes and tailings. Its subsidiaries include Orca Minerals Limited, Orca Gold International Limited, Bilbao Resources S.A. de C.V. and Bilbao Mining S.A. de C.V.