caution keep out sign and chain blocking a boardwalk boat dock on a small lake in Silverthorne colorado AERIAL DOLLY

silverthorne colorado caution sign colorado keep out chain barrier boardwalk dock small lake aerial dolly 4k footage dockside warning restricted access lake view public safety waterfront path moored boats water danger prohibited area colorado lakes water safety drone filming cautionary notice chain link wooden boardwalk private dock serene water no entry lakeside caution aerial approach maritime boundary restricted dock secure area warning sign dolly shot lakefront lake ecosystem community rules security measures drone perspective waterway protection marina security exclusion zone dock safety privacy chain property line lake property boarding area navigational safety dockside barrier clear waters