"seamark:type"=>"landmark","seamark:landmark:category"=>"chimney","seamark:landmark:conspicuity"=>"conspicuous","seamark:landmark:reflectivity"=>"conspicuous"
"seamark:type"=>"landmark","height:stddev"=>"0.13","source:height"=>"survey with theodolite;AHN2;NAP bout 40B206","seamark:landmark:category"=>"chimney","seamark:landmark:conspicuity"=>"conspicuous","seamark:landmark:reflectivity"=>"conspicuous"