Updated: July 22, 4:30 p.m.
State officials estimated the crowd on Monday stood at 1,500 people at the site of the protest against the planned Thirty Meter Telescope. There were no arrests.
Officials said when informed by law enforcement officers about alcohol and marijuana use at the site last week, protest leaders said they would patrol the area and ask violators to leave. "Those efforts were successful as officers say there is no longer evidence of alcohol and marijuana use," the state said in a media news release.
Also, those climbing the volcanic cone at Puʻu Huluhulu were advised to take precautions to prevent the spread of Rapid Ohia Death.