WordPress at a glance
action is not described

woocommerce_widget_shopping_cart_total action-hook . WC 1.0

Hook: woocommerce_widget_shopping_cart_total.

Usage

add_action( 'woocommerce_widget_shopping_cart_total', 'action_function_name_8573' );
function action_function_name_8573(){
	// action...
}

Where the hook is called

In file: /templates/cart/mini-cart.php
woocommerce_widget_shopping_cart_total
woocommerce/templates/cart/mini-cart.php 80
do_action( 'woocommerce_widget_shopping_cart_total' );

Where in WP core the hook is used WooCommerce

woocommerce/includes/wc-template-hooks.php 227
add_action( 'woocommerce_widget_shopping_cart_total', 'woocommerce_widget_shopping_cart_subtotal', 10 );