{"version":"1.0","type":"card","id":"8e1e4494-5502-4568-b172-3b447df1c303","url":"https://stacklist.com/card/8e1e4494-5502-4568-b172-3b447df1c303","title":"Diamond Head State Monument","source_url":"https://dlnr.hawaii.gov/dsp/parks/oahu/diamond-head-state-monument/?utm_source=chatgpt.com","note":"Difficulty: 🟡 Moderate\nDistance: Approximately 1.6 miles round trip\nElevation gain: Approximately 560 feet\nEstimated time: 1.5–2 hours\nOne of Hawaiʻi's most famous hikes. The historic trail climbs through the interior of Diamond Head crater before reaching spectacular panoramic views of Waikīkī and Oʻahu's southern coastline.\nThe route includes switchbacks, stairs and a tunnel.\nImportant: Non-Hawaiʻi residents generally need advance reservations for entry.\nBring: Water, sunscreen, hat and comfortable athletic or hiking shoes.\n\n\n","image":{"url":"https://ucarecdn.com/e14a18e0-01b2-4582-ba82-83dbc0e0a60f/","alt":"Diamond Head State Monument","width":640,"height":480},"stack":{"id":"76467c4b-c4ea-4299-8764-34009edefadb","title":"Hikes on Oʻahu: Honolulu Hiking Trails from Easy to Challenging","url":"https://stacklist.com/stack/76467c4b-c4ea-4299-8764-34009edefadb"},"created_at":"2026-10-13T14:25:10.705Z","updated_at":null,"aco":{"summary":"Diamond Head State Monument is Hawaii's most recognized landmark featuring a historic 0.8-mile hiking trail with stunning coastal views and military history on Oahu's eastern edge. The monument encompasses over 475 acres of a crater formed 300,000 years ago, with visitor access requiring reservations for non-residents and operating hours from 6:00 am to 6:00 pm daily.","tags":["diamond-head","hawaii-state-park","hiking-trail","oahu","waikiki","crater","military-history"],"key_entities":[{"name":"Diamond Head","type":"location","confidence":0.99},{"name":"Oahu","type":"location","confidence":0.99},{"name":"Waikiki","type":"location","confidence":0.98},{"name":"Hawaii","type":"location","confidence":0.99},{"name":"Fort Ruger","type":"location","confidence":0.85},{"name":"Koko Head","type":"location","confidence":0.87},{"name":"Wai'anae","type":"location","confidence":0.87},{"name":"Hawaii State Parks","type":"organization","confidence":0.92},{"name":"Fire Control Station","type":"concept","confidence":0.88},{"name":"tuff","type":"concept","confidence":0.82},{"name":"storm-related closure","type":"event","confidence":0.75}],"classification":"reference","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/be@0.1.0","confidence":0.85,"timestamp":"2026-10-13T14:25:15.576Z"},"token_counts":{"approximate":2337,"cl100k":2127},"content_hash":"sha256:11edc3143b857766a776b8ffbc8e2c0ef78584d340e3a16d5dc164d5fe9cfb92","acp_version":"0.2","body_available":true,"body_tokens":2337,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/8e1e4494-5502-4568-b172-3b447df1c303.json","html":"https://stacklist.com/card/8e1e4494-5502-4568-b172-3b447df1c303","md":"/api/public/card/8e1e4494-5502-4568-b172-3b447df1c303.md","stack_json":"/api/public/stack/76467c4b-c4ea-4299-8764-34009edefadb.json"}}