Harrison's Cave on stamps

Having just visited Harrison's Cave in Barbados, in the Caribbean, I found there are a few stamps depicting the cave.

The first was issued in 1977 ,  Natural Beauty of Barbados series, $1

Next was a series just on Harrison's Cave, 1981 , a set of 4, SG 689-692 -

Then a 90 c in the 2000 series  "Pride of Barbados" , SG 1159 :

And in 2014,  a 65 c Harrison's Cave,  in the series  The Seven Wonders of Barbados, SG 1404/10