diff --git a/map_gen/maps/diggy/config.lua b/map_gen/maps/diggy/config.lua
index 2172234b..b782c38a 100644
--- a/map_gen/maps/diggy/config.lua
+++ b/map_gen/maps/diggy/config.lua
@@ -83,6 +83,7 @@ local Config = {
             collapse_threshold_total_strength = 16,
             support_beam_entities = {
                 ['market'] = 9,
+                ['nuclear-reactor'] = 4,
                 ['stone-wall'] = 3,
                 ['sand-rock-big'] = 2,
                 ['rock-big'] = 2,
diff --git a/map_gen/maps/diggy/feature/diggy_cave_collapse.lua b/map_gen/maps/diggy/feature/diggy_cave_collapse.lua
index 420780cb..45b87e44 100644
--- a/map_gen/maps/diggy/feature/diggy_cave_collapse.lua
+++ b/map_gen/maps/diggy/feature/diggy_cave_collapse.lua
@@ -117,7 +117,14 @@ local function create_collapse_template(positions, surface)
                     if strength then
                         do_insert = false
                     else
-                        entity.die()
+                        if entity.name ~= 'tank' then
+                            entity.die()
+                        else
+                            entity.health = entity.health - 100
+                            if entity.health == 0 then
+                                entity.die()
+                            end
+                        end
                     end
                 end
             )
@@ -288,7 +295,7 @@ local function script_raised_destroy(event)
     local name = entity.name
     local strength = support_beam_entities[name]
     if strength then
-        stress_map_add(entity.surface, entity.position, strength, false, player_index) -- luacheck: ignore 113
+        stress_map_add(entity.surface, entity.position, strength, false)
     end
 end
 
diff --git a/map_gen/maps/diggy/feature/diggy_hole.lua b/map_gen/maps/diggy/feature/diggy_hole.lua
index f0ce0e53..799d7ad9 100644
--- a/map_gen/maps/diggy/feature/diggy_hole.lua
+++ b/map_gen/maps/diggy/feature/diggy_hole.lua
@@ -147,6 +147,12 @@ local function on_mined_tile(surface, tiles)
 
     Template.insert(surface, new_tiles, {})
 end
+
+--[[--
+    diggy-clear-void is a debugging command that can be used in game to clear void area.  Arguments: left_top_x left_top_y width height surface_index
+    Example:  /diggy-clear-void -50 -50 100 100 redmew    This will clear a square area 100 x 100 centered on the spawn point.
+    Note: The command will not automatically generate new chunks.
+]]
 Command.add('diggy-clear-void', {
     description = {'command_description.diggy_clear_void'},
     arguments = {'left_top_x', 'left_top_y', 'width', 'height', 'surface_index'},
@@ -209,17 +215,19 @@ function DiggyHole.register(cfg)
         local entity = event.entity
         local name = entity.name
 
-        if entity.health ~= 0 then
-            return
-        end
-
         if not is_diggy_rock(name) then
             return
         end
 
-        raise_event(defines.events.script_raised_destroy, {entity = entity, cause = "die_faster"})
-        destroy_rock(entity.surface.create_particle, 10, entity.position)
-        entity.destroy()
+        local cause = event.cause
+        local health = entity.health
+
+        -- Diggy rock is destroyed if health is zero or less than 1500 when damaged by a tank (tank buff)
+        if health == 0 or (cause and cause.name == "tank" and health < 1500 and event.damage_type.valid and event.damage_type.name ~= 'fire') then
+            raise_event(defines.events.script_raised_destroy, {entity = entity, cause = "die_faster"})
+            destroy_rock(entity.surface.create_particle, 10, entity.position)
+            entity.destroy()
+        end
     end)
 
     Event.add(defines.events.on_robot_mined_entity, function (event)
diff --git a/map_gen/maps/diggy/orepattern/tendrils_impure.lua b/map_gen/maps/diggy/orepattern/tendrils_impure.lua
index 21309fa0..1adf73e5 100644
--- a/map_gen/maps/diggy/orepattern/tendrils_impure.lua
+++ b/map_gen/maps/diggy/orepattern/tendrils_impure.lua
@@ -40,9 +40,9 @@ return {
             }
         },
         weights = {
-            ['iron-ore']    = 860,
-            ['coal']        = 85,
-            ['stone']       = 55,
+            ['iron-ore']    = 900,
+            ['coal']        = 61,
+            ['stone']       = 39,
         },
         distances = {
             ['coal']        = 16,
@@ -51,9 +51,10 @@ return {
         },
     },
     { -- tendril medium large impure copper
-        yield=0.92,
+      -- 07/09/2000 start with a little less yeild near origin but grow in richness faster with distance
+        yield=0.85,
         min_distance=25,
-        distance_richness=9,
+        distance_richness=6,
         color={r=255/255, g=55/255, b=0/255},
         noise_settings = {
             type = "connected_tendril",
@@ -66,9 +67,9 @@ return {
             }
         },
         weights = {
-            ['copper-ore']  = 860,
-            ['coal']        = 85,
-            ['stone']       = 55,
+            ['copper-ore']  = 900,
+            ['coal']        = 61,
+            ['stone']       = 39,
         },
         distances = {
             ['coal']        = 16,
@@ -77,9 +78,9 @@ return {
         },
     },
     { -- tendril medium impure coal
-        yield=0.5,
+        yield=0.55,
         min_distance=25,
-        distance_richness=9,
+        distance_richness=11,
         color={r=0/255, g=0/255, b=0/255},
         noise_settings = {
             type = "connected_tendril",
@@ -103,9 +104,9 @@ return {
         },
     },
     { -- tendril medium impure stone
-        yield=0.35,
+        yield=0.38,
         min_distance=25,
-        distance_richness=9,
+        distance_richness=11,
         color={r=100/255, g=100/255, b=100/255},
         noise_settings = {
             type = "connected_tendril",
@@ -130,8 +131,8 @@ return {
     },
     { -- tendril small uranium
         yield=0.2,
-        min_distance=86,
-        distance_richness=9,
+        min_distance=128,
+        distance_richness=12,
         color={r=0/255, g=0/255, b=0/255},
         noise_settings = {
             type = "connected_tendril",
@@ -151,9 +152,9 @@ return {
         },
     },
     { -- scattered tendril fragments
-        yield=0.2,
+        yield=0.22,
         min_distance=10,
-        distance_richness=7,
+        distance_richness=12,
         color={r=0/255, g=0/255, b=0/255},
         noise_settings = {
             type = "fragmented_tendril",
@@ -186,7 +187,7 @@ return {
         },
     },
     { -- crude oil
-        yield=1.7,
+        yield=1.2,
         min_distance=57,
         distance_richness=9,
         color={r=0/255, g=255/255, b=255/255},
diff --git a/map_gen/maps/diggy/scenario.lua b/map_gen/maps/diggy/scenario.lua
index 09ae5dad..d6b2c87c 100644
--- a/map_gen/maps/diggy/scenario.lua
+++ b/map_gen/maps/diggy/scenario.lua
@@ -73,9 +73,6 @@ function Scenario.register()
         end
     )
 
-    local landfill_tiles = {'dirt-1','dirt-2','dirt-3','dirt-4','dirt-5','dirt-6','dirt-7'}
-    require ('map_gen.shared.change_landfill_tile')(landfill_tiles)
-
     ScenarioInfo.set_map_name('Diggy')
     ScenarioInfo.set_map_description('Dig your way through!')
 
diff --git a/map_gen/shared/hail_hydra.lua b/map_gen/shared/hail_hydra.lua
index 809f79b2..11cac546 100644
--- a/map_gen/shared/hail_hydra.lua
+++ b/map_gen/shared/hail_hydra.lua
@@ -143,7 +143,7 @@ local on_died =
                 local spawned = create_entity({name = hydra_spawn, force = force, position = position})
                 if spawned and spawned.type == 'unit' then
                     spawned.set_command(command)
-                elseif spawned and cause and cause.valid and cause.force then
+                elseif spawned and cause and cause.valid and cause.force and cause.type ~= "car" then
                     spawned.shooting_target = cause
                 end
             end