A military bunker located near the coordinates 36.0746965, -5.754395 in southern Spain. The provided web search results discuss pillbox fortifications on Lanzarote in the Canary Islands, which are at different geographic coordinates (approximately 28.85634°N, 13.84042°W). No specific historical or technical information is available in the search results for the structure at the given mainland Spain coordinates.
Further local research or verification would be required to confirm its existence, type, and historical context.